ICD-10-CM Diagnosis Code T36.1X1D - Poisoning by cephalosporins and other beta-lactam antibiotics, accidental (unintentional), subsequent encounter (original) (raw)
ICD List 2025-2026 Edition
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- 2026 ICD-10-CM Code T36.1X1D
Poisoning by cephalosporins and other beta-lactam antibiotics, accidental (unintentional), subsequent encounter
ICD-10-CM Code:
T36.1X1D
ICD-10 Code for:
Poisoning by cephalospor/oth beta-lactm antibiot, acc, subs
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
Code Navigator:
T36.1X1D is a billable diagnosis code used to specify a medical diagnosis of poisoning by cephalosporins and other beta-lactam antibiotics, accidental (unintentional), subsequent encounter. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2025 through September 30, 2026. The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.
T36.1X1D is a subsequent encounter code, includes a 7th character and should be used after the patient has completed active treatment for a condition like poisoning by cephalosporins and other beta-lactam antibiotics accidental (unintentional). According to ICD-10-CM Guidelines a "subsequent encounter" occurs when the patient is receiving routine care for the condition during the healing or recovery phase of treatment. Subsequent diagnosis codes are appropriate during the recovery phase, no matter how many times the patient has seen the provider for this condition. If the provider needs to adjust the patient's care plan due to a setback or other complication, the encounter becomes active again.
- Code Information
- Approximate Synonyms
- Clinical Classification
- Clinical Information
- Coding Guidelines
- Tabular List of Diseases and Injuries
- Diagnostic Related Groups Mapping
- Present on Admission (POA)
- Convert to ICD-9 Code
- Table of Drugs and Chemicals
- Patient Education
- Other Codes Used Similar Conditions
- Code History
- Injury, poisoning and certain other consequences of external causes
S00–T88
The following list of clinical terms are approximate synonyms, alternative descriptions, or common phrases that might be used by patients, healthcare providers, or medical coders to describe the same condition. These synonyms and related diagnosis terms are often used when searching for an ICD-10 code, especially when the exact medical terminology is unclear. Whether you're looking for lay terms, similar diagnosis names, or common language alternatives, this list can help guide you to the correct ICD-10 classification.
- Accidental cefaclor overdose
- Accidental cefaclor poisoning
- Accidental cefadroxil overdose
- Accidental cefadroxil poisoning
- Accidental cefixime overdose
- Accidental cefixime poisoning
- Accidental cefodizime overdose
- Accidental cefodizime poisoning
- Accidental cefotaxime overdose
- Accidental cefotaxime poisoning
- Accidental cefpirome overdose
- Accidental cefpirome poisoning
- Accidental cefpodoxime overdose
- Accidental cefpodoxime poisoning
- Accidental cefsulodin overdose
- Accidental cefsulodin poisoning
- Accidental ceftazidime overdose
- Accidental ceftazidime poisoning
- Accidental ceftibuten overdose
- Accidental ceftibuten poisoning
- Accidental ceftizoxime overdose
- Accidental ceftizoxime poisoning
- Accidental ceftriaxone overdose
- Accidental ceftriaxone poisoning
- Accidental cefuroxime overdose
- Accidental cefuroxime poisoning
- Accidental cephalexin overdose
- Accidental cephalexin poisoning
- Accidental cephaloridine poisoning
- Accidental cephalothin overdose
- Accidental cephalothin poisoning
- Accidental cephamandole overdose
- Accidental cephamandole poisoning
- Accidental cephazolin overdose
- Accidental cephazolin poisoning
- Accidental cephradine overdose
- Accidental cephradine poisoning
- Accidental latamoxef overdose
- Accidental latamoxef poisoning
- Cefaclor overdose
- Cefaclor poisoning
- Cefadroxil overdose
- Cefadroxil poisoning
- Cefixime overdose
- Cefixime poisoning
- Cefodizime overdose
- Cefodizime poisoning
- Cefotaxime overdose
- Cefotaxime poisoning
- Cefpirome overdose
- Cefpirome poisoning
- Cefpodoxime overdose
- Cefpodoxime poisoning
- Cefsulodin overdose
- Cefsulodin poisoning
- Ceftazidime overdose
- Ceftazidime poisoning
- Ceftibuten overdose
- Ceftibuten poisoning
- Ceftizoxime overdose
- Ceftizoxime poisoning
- Ceftriaxone overdose
- Ceftriaxone poisoning
- Cefuroxime overdose
- Cefuroxime poisoning
- Cephalexin overdose
- Cephalosporin group overdose
- Cephalothin overdose
- Cephamandole overdose
- Cephamandole poisoning
- Cephazolin overdose
- Cephazolin poisoning
- Cephradine overdose
- Cephradine poisoning
- First generation cephalosporin overdose
- First generation cephalosporin poisoning
- Fourth generation cephalosporin overdose
- Fourth generation cephalosporin poisoning
- Latamoxef overdose
- Latamoxef poisoning
- Poisoning by cephalexin
- Poisoning by cephaloglycin
- Poisoning by cephaloridine
- Poisoning by cephalosporin group antibiotic
- Poisoning by cephalothin
- Second generation cephalosporin overdose
- Second generation cephalosporin poisoning
- Third generation cephalosporin overdose
- Third generation cephalosporin poisoning
Clinical Classifications group individual ICD-10-CM diagnosis codes into broader, clinically meaningful categories. These categories help simplify complex data by organizing related conditions under common clinical themes.
They are especially useful for data analysis, reporting, and clinical decision-making. Even when diagnosis codes differ, similar conditions can be grouped together based on their clinical relevance. Each category is assigned a unique CCSR code that represents a specific clinical concept, often tied to a body system or medical specialty.
CCSR Code: INJ059
Inpatient Default: Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis.
Outpatient Default: Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis.
Aztreonam
a monocyclic beta-lactam antibiotic originally isolated from chromobacterium violaceum. it is resistant to beta-lactamases and is used in gram-negative infections, especially of the meninges, bladder, and kidneys. it may cause a superinfection with gram-positive organisms.
Cefaclor
semisynthetic, broad-spectrum antibiotic derivative of cephalexin.
Cefadroxil
long-acting, broad-spectrum, water-soluble, cephalexin derivative.
Cefamandole
semisynthetic wide-spectrum cephalosporin with prolonged action, probably due to beta-lactamase resistance. it is used also as the nafate.
Cefatrizine
orally active semisynthetic cephalosporin antibiotic with broad-spectrum activity.
Cefazolin
a semisynthetic cephalosporin analog with broad-spectrum antibiotic action due to inhibition of bacterial cell wall synthesis. it attains high serum levels and is excreted quickly via the urine.
Cefixime
a third-generation cephalosporin antibiotic that is stable to hydrolysis by beta-lactamases.
Cefmenoxime
a cephalosporin antibiotic that is administered intravenously or intramuscularly. it is active against most common gram-positive and gram-negative microorganisms, is a potent inhibitor of enterobacteriaceae, and is highly resistant to hydrolysis by beta-lactamases. the drug has a high rate of efficacy in many types of infection and to date no severe side effects have been noted.
Cefmetazole
a semisynthetic cephamycin antibiotic with a broad spectrum of activity against both gram-positive and gram-negative microorganisms. it has a high rate of efficacy in many types of infection and to date no severe side effects have been noted.
Cefonicid
a second-generation cephalosporin administered intravenously or intramuscularly. its bactericidal action results from inhibition of cell wall synthesis. it is used for urinary tract infections, lower respiratory tract infections, and soft tissue and bone infections.
Cefoperazone
semisynthetic broad-spectrum cephalosporin with a tetrazolyl moiety that is resistant to beta-lactamase. it may be used to treat pseudomonas infections.
Cefotaxime
semisynthetic broad-spectrum cephalosporin.
Cefotetan
a semisynthetic cephamycin antibiotic that is administered intravenously or intramuscularly. the drug is highly resistant to a broad spectrum of beta-lactamases and is active against a wide range of both aerobic and anaerobic gram-positive and gram-negative microorganisms.
Cefotiam
one of the cephalosporins that has a broad spectrum of activity against both gram-positive and gram-negative microorganisms.
Cefoxitin
a semisynthetic cephamycin antibiotic resistant to beta-lactamase.
Cefsulodin
a pyridinium-substituted semisynthetic, broad-spectrum antibacterial used especially for pseudomonas infections in debilitated patients.
Ceftazidime
semisynthetic, broad-spectrum antibacterial derived from cephaloridine and used especially for pseudomonas and other gram-negative infections in debilitated patients.
Ceftizoxime
a semisynthetic cephalosporin antibiotic which can be administered intravenously or by suppository. the drug is highly resistant to a broad spectrum of beta-lactamases and is active against a wide range of both aerobic and anaerobic gram-positive and gram-negative organisms. it has few side effects and is reported to be safe and effective in aged patients and in patients with hematologic disorders.
Ceftriaxone
a broad-spectrum cephalosporin antibiotic and cefotaxime derivative with a very long half-life and high penetrability to meninges, eyes and inner ears.
Cefuroxime
broad-spectrum cephalosporin antibiotic resistant to beta-lactamase. it has been proposed for infections with gram-negative and gram-positive organisms, gonorrhea, and haemophilus.
Cephalexin
a semisynthetic cephalosporin antibiotic with antimicrobial activity similar to that of cephaloridine or cephalothin, but somewhat less potent. it is effective against both gram-positive and gram-negative organisms.
Cephalosporinase
a cephalosporin antibiotic.
Cephaloglycin
a cephalorsporin antibiotic.
Cephaloridine
a cephalosporin antibiotic.
Cephalosporins
a group of broad-spectrum antibiotics first isolated from the mediterranean fungus acremonium. they contain the beta-lactam moiety thia-azabicyclo-octenecarboxylic acid also called 7-aminocephalosporanic acid.
First Generation Cephalosporins
cephalosporin agents with excellent coverage against gram-positive cocci, such as staphylococcus and streptococcus. they have some activity against the gram-negative bacteria, but in general, gram-negative activity is decreased compared to 2nd, 3rd, and 4th generation cephalosporins.
Second Generation Cephalosporins
agents with less activity against gram-positive cocci than first generation cephalosporins but have increased activity against gram-negative bacilli.
Third Generation Cephalosporins
agents that are structurally similar to other cephalosporins but have a broader spectrum of activity against bacteria than the first and second generation cephalosporins. these agents cover more resistant streptococcus, staphylococcus, gram-positive anaerobes, and more resistant strains of haemophilus, neisseria, proteus, escherichia coli, and klebsiella (hnpek).
Cephalothin
a cephalosporin antibiotic.
Cephradine
a semi-synthetic cephalosporin antibiotic.
Clavulanic Acid
a beta-lactam antibiotic produced by the actinobacterium streptomyces clavuligerus. it is a suicide inhibitor of bacterial beta-lactamase enzymes. administered alone, it has only weak antibacterial activity against most organisms, but given in combination with other beta-lactam antibiotics it prevents antibiotic inactivation by microbial lactamase.
Clavulanic Acids
acids, salts, and derivatives of clavulanic acid (c8h9o5n). they consist of those beta-lactam compounds that differ from penicillin in having the sulfur of the thiazolidine ring replaced by an oxygen. they have limited antibacterial action, but block bacterial beta-lactamase irreversibly, so that similar antibiotics are not broken down by the bacterial enzymes and therefore can exert their antibacterial effects.
When coding a poisoning or reaction to the improper use of a medication (e.g., overdose, wrong substance given or taken in error, wrong route of administration), first assign the appropriate code from categories T36-T50. The poisoning codes have an associated intent as their 5th or 6th character (accidental, intentional self-harm, assault and undetermined. If the intent of the poisoning is unknown or unspecified, code the intent as accidental intent. The undetermined intent is only for use if the documentation in the record specifies that the intent cannot be determined. Use additional code(s) for all manifestations of poisonings.
The appropriate 7th character is to be added to each code from block Poisoning by, adverse effect of and underdosing of systemic antibiotics (T36). Use the following options for the aplicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
T36.1X1D is exempt from POA reporting - The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement. Review other POA exempt codes here.
CMS POA Indicator Options and Definitions
POA Indicator: Y
Reason: Diagnosis was present at time of inpatient admission.
CMS Pays CC/MCC DRG? YES
POA Indicator: N
Reason: Diagnosis was not present at time of inpatient admission.
CMS Pays CC/MCC DRG? NO
POA Indicator: U
Reason: Documentation insufficient to determine if the condition was present at the time of inpatient admission.
CMS Pays CC/MCC DRG? NO
POA Indicator: W
Reason: Clinically undetermined - unable to clinically determine whether the condition was present at the time of inpatient admission.
CMS Pays CC/MCC DRG? YES
POA Indicator: 1
Reason: Unreported/Not used - Exempt from POA reporting.
CMS Pays CC/MCC DRG? NO
Below are the ICD-9 codes that most closely match this ICD-10 code, based on the General Equivalence Mappings (GEMs). This ICD-10 to ICD-9 crosswalk tool is helpful for coders who need to reference legacy diagnosis codes for audits, historical claims, or approximate code comparisons.
ICD-9-CM: V58.89
Approximate Flag - The approximate mapping means this ICD-10 code does not have an exact ICD-9 equivalent. The matched code is the closest available option, but it may not fully capture the original diagnosis or clinical intent.
The parent code T36.1X1 of the current diagnosis code is referenced in the Table of Drugs and Chemicals, this table contains a classification of drugs, industrial solvents, corrosive gases, noxious plants, pesticides, and other toxic agents.
According to ICD-10-CM coding guidelines it is advised to do not code directly from the Table of Drugs and Chemicals, instead always refer back to the Tabular List when doing the initial coding. Each substance in the table is assigned a code according to the poisoning classification and external causes of adverse effects. It is important to use as many codes as necessary to specify all reported drugs, medicinal or chemical substances. If the same diagnosis code describes the causative agent for more than one adverse reaction, poisoning, toxic effect or underdosing, utilize the code only once.
Filter table of drugs and chemicals:
Antibiotics
What are antibiotics?
Antibiotics are medicines that fight bacterial infections in people and animals. They work by killing the bacteria or by making it hard for the bacteria to grow and multiply.
Antibiotics can be taken in different ways:
- Orally (by mouth). This could be pills, capsules, or liquids.
- Topically. This might be a cream, spray, or ointment that you put on your skin. It could also be eye ointment, eye drops, or ear drops.
- Through an injection or intravenously (IV). This is usually for more serious infections.
What do antibiotics treat?
Antibiotics only treat certain bacterial infections, such as strep throat, urinary tract infections, and E. coli.
You may not need to take antibiotics for some bacterial infections. For example, you might not need them for many sinus infections or some ear infections. Taking antibiotics when they're not needed won't help you, and they can have side effects. Your health care provider can decide the best treatment for you when you're sick. Don't ask your provider to prescribe an antibiotic for you.
Do antibiotics treat viral infections?
Antibiotics do not work on viral infections. For example, you shouldn't take antibiotics for:
- Colds and runny noses, even if the mucus is thick, yellow, or green
- Most sore throats (except strep throat)
- Flu
- Most cases of bronchitis
What are the side effects of antibiotics?
The side effects of antibiotics range from minor to very severe. Some of the common side effects include:
- Rash
- Nausea
- Diarrhea
- Yeast infections
More serious side effects can include:
- C. diff infections, which cause diarrhea that can lead to severe colon damage and sometimes even death
- Severe and life-threatening allergic reactions
- Antibiotic resistance infections
Call your health care provider if you develop any side effects while taking your antibiotic.
Why is it important to take antibiotics only when they're needed?
You should only take antibiotics when they are needed because they can cause side effects and can contribute to antibiotic resistance. Antibiotic resistance happens when the bacteria change and become able to resist the effects of an antibiotic. This means that the bacteria continue to grow.
How do I use antibiotics correctly?
When you take antibiotics, it is important that you take them responsibly:
- Always follow the directions carefully. Finish your medicine even if you feel better. If you stop taking them too soon, some bacteria may survive and re-infect you.
- Don't save your antibiotics for later.
- Don't share your antibiotic with others.
- Don't take antibiotics prescribed for someone else. This may delay the best treatment for you, make you even sicker, or cause side effects.
Centers for Disease Control and Prevention
Medication Errors
Medicines treat infectious diseases, prevent problems from chronic diseases, and ease pain. But medicines can also cause harmful reactions if not used correctly. Errors can happen in the hospital, at the health care provider's office, at the pharmacy, or at home. You can help prevent errors by:
- Knowing your medicines. When you get a prescription, ask the name of the medicine and check to make sure that the pharmacy gave you the right medicine. Make sure that you understand how often you should take the medicine and how long you should take it.
- Keeping a list of medicines.
- Write down all of the medicines that you are taking, including the names of your medicines, how much you take, and when you take them. Make sure to include any over-the-counter medicines, vitamins, supplements, and herbs that you take.
- List the medicines that you are allergic to or that have caused you problems in the past.
- Take this list with you every time you see a health care provider.
- Reading medicine labels and following the directions. Don't just rely on your memory - read the medication label every time. Be especially careful when giving medicines to children.
- Asking questions. If you don't know the answers to these questions, ask your health care provider or pharmacist:
- Why am I taking this medicine?
- What are the common side effects?
- What should I do if I have side effects?
- When should I stop this medicine?
- Can I take this medicine with the other medicines and supplements on my list?
- Do I need to avoid certain foods or alcohol while taking this medicine?
Food and Drug Administration
FY 2026 - No Change, effective from 10/1/2025 through 9/30/2026
FY 2025 - No Change, effective from 10/1/2024 through 9/30/2025
FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.