ICD-10-CM Diagnosis Code T36.4X - Poisoning by, adverse effect of and underdosing of tetracyclines (original) (raw)

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ICD List 2025-2026 Edition

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Poisoning by, adverse effect of and underdosing of tetracyclines

ICD-10-CM Code:

T36.4X

ICD-10 Code for:

Tetracyclines

Is Billable?

Not Valid for Submission

Code Navigator:

T36.4X is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity from the list below for a diagnosis of poisoning by, adverse effect of and underdosing of tetracyclines. The code is not specific and is NOT valid for the year 2026 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Non-specific codes like T36.4X require more digits to indicate the appropriate level of specificity. Consider using any of the following billable codes with a higher level of specificity when coding for tetracyclines:

T36.4X1 for Poisoning by tetracyclines, accidental (unintentional)

Use T36.4X1A for initial encounter

Use T36.4X1D for subsequent encounter

Use T36.4X1S for sequela

T36.4X2 for Poisoning by tetracyclines, intentional self-harm

Use T36.4X2A for initial encounter

Use T36.4X2D for subsequent encounter

Use T36.4X2S for sequela

T36.4X3 for Poisoning by tetracyclines, assault

Use T36.4X3A for initial encounter

Use T36.4X3D for subsequent encounter

Use T36.4X3S for sequela

T36.4X4 for Poisoning by tetracyclines, undetermined

Use T36.4X4A for initial encounter

Use T36.4X4D for subsequent encounter

Use T36.4X4S for sequela

T36.4X5 for Adverse effect of tetracyclines

Use T36.4X5A for initial encounter

Use T36.4X5D for subsequent encounter

Use T36.4X5S for sequela

T36.4X6 for Underdosing of tetracyclines

Use T36.4X6A for initial encounter

Use T36.4X6D for subsequent encounter

Use T36.4X6S for sequela

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closely congeneric derivatives of the polycyclic naphthacenecarboxamide. (gilman et al., goodman and gilman's the pharmacological basis of therapeutics, 8th ed, p1117)

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:

Drug Reactions

Most of the time, medicines make our lives better. They reduce aches and pains, fight infections, and control problems such as high blood pressure or diabetes. But medicines can also cause unwanted reactions, such as drug interactions, side effects, and allergies.

What is a drug interaction?

A drug interaction is a change in the way a drug acts in the body when taken with certain other drugs, foods, or supplements or when taken while you have certain medical conditions. Examples include:

Interactions could cause a drug to be more or less effective, cause side effects, or change the way one or both drugs work.

What are side effects?

Side effects are unwanted, usually unpleasant, effects caused by medicines. Most are mild, such as a stomachache, dry mouth, or drowsiness, and go away after you stop taking the medicine. Others can be more serious. Sometimes a drug can interact with a disease that you have and cause a side effect. For example, if you have a heart condition, certain decongestants can cause you to have a rapid heartbeat.

What are drug allergies?

Drug allergies are another type of reaction. They can range from mild to life-threatening. Skin reactions, such as hives and rashes, are the most common type. Anaphylaxis, a serious allergic reaction, is less common.

How can I stay safe when taking medicines?

When you start a new prescription or over-the-counter medicine, make sure you understand how to take it correctly. Know which other medicines, foods, and supplements you need to avoid. Always talk to your health care provider or pharmacist if you have questions about your medicines.

[Learn More in MedlinePlus]