ICD-10-CM Diagnosis Code L53.9 - Erythematous condition, unspecified (original) (raw)
ICD List 2025-2026 Edition
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- 2026 ICD-10-CM Code L53.9
Erythematous condition, unspecified
ICD-10-CM Code:
L53.9
ICD-10 Code for:
Erythematous condition, unspecified
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
Code Navigator:
L53.9 is a billable diagnosis code used to specify a medical diagnosis of erythematous condition, unspecified. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2025 through September 30, 2026.
Unspecified diagnosis codes like L53.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.
- Code Information
- Approximate Synonyms
- Clinical Classification
- Clinical Information
- Tabular List of Diseases and Injuries
- Index to Diseases and Injuries References
- Diagnostic Related Groups Mapping
- Convert to ICD-9 Code
- Patient Education
- Other Codes Used Similar Conditions
- Code History
- Diseases of the skin and subcutaneous tissue
L00–L99
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.
- Acute erythema
- Application site erythema
- Application site rash
- Application site reaction
- Chronic erythema
- Eruption of female perineum
- Eruption of female perineum
- Eruption of vulva
- Erythema
- Erythema at injection site
- Erythema of female perineum
- Erythema of female perineum
- Erythema of periwound skin
- Erythema of skin
- Erythema of skin of nose
- Erythema of vagina
- Erythema of vulva
- Erythema over mastoid
- Erythroderma
- Erythroderma in infancy
- Erythroderma of unknown etiology
- Exanthematous disorder
- Finding of color of foot
- Finding of color of limb
- Foot red
- Idiopathic erythema
- Implant site erythema
- Injection site eruption
- Mucous membrane erythema
- Perifollicular erythema
- Periorbital erythema
- Persistent erythema of skin
- Rash of periwound skin
- Red extremities
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: SKN002
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.
Acrodermatitis
inflammation involving the skin of the extremities, especially the hands and feet. several forms are known, some idiopathic and some hereditary. the infantile form is called gianotti-crosti syndrome.
Acrodynia
a condition seen primarily in childhood, most often resulting from chronic exposure to mercury compounds which may result in encephalopathy and polyneuropathy. clinical features include pain, swelling and pinkish discoloration of the fingers and toes, weakness in the extremities, extreme irritability, hyperesthesia, and alterations in level of consciousness. (from menkes, textbook of child neurology, 5th ed, p603)
Bloom Syndrome
an autosomal recessive disorder characterized by telangiectatic erythema of the face, photosensitivity, dwarfism and other abnormalities, and a predisposition toward developing cancer. the bloom syndrome gene (blm) encodes a recq-like dna helicase.
Erythema
redness of the skin produced by congestion of the capillaries. this condition may result from a variety of disease processes.
Erythema Ab Igne
a cutaneous finding caused by prolonged heat exposure (e.g., space heater) and local heat injury (e.g., caused by laser therapy). it is characterized by epidermal atrophy, reticular hyperpigmentation, and telangiectatic dermatosis.
Erythema Chronicum Migrans
a deep type of gyrate erythema that follows a bite by an ixodid tick; it is a stage-1 manifestation of lyme disease. the site of the bite is characterized by a red papule that expands peripherally as a nonscaling, palpable band that clears centrally. this condition is often associated with systemic symptoms such as chills, fever, headache, malaise, nausea, vomiting, fatigue, backache, and stiff neck.
Erythema Induratum
a type of panniculitis characterized histologically by the presence of granulomas, vasculitis, and necrosis. it is traditionally considered to be the tuberculous counterpart of nodular vasculitis, but is now known to occur without tuberculous precedent. it is seen most commonly in adolescent and menopausal women, is initiated or exacerbated by cold weather, and typically presents as one or more recurrent erythrocyanotic nodules or plaques on the calves. the nodules may progress to form indurations, ulcerations, and scars.
Erythema Infectiosum
contagious infection with human b19 parvovirus most commonly seen in school age children and characterized by fever, headache, and rashes of the face, trunk, and extremities. it is often confused with rubella.
Erythema Multiforme
a skin and mucous membrane disease characterized by an eruption of macules, papules, nodules, vesicles, and/or bullae with characteristic bull's-eye lesions usually occurring on the dorsal aspect of the hands and forearms.
Erythema Nodosum
an erythematous eruption commonly associated with drug reactions or infection and characterized by inflammatory nodules that are usually tender, multiple, and bilateral. these nodules are located predominantly on the shins with less common occurrence on the thighs and forearms. they undergo characteristic color changes ending in temporary bruise-like areas. this condition usually subsides in 3-6 weeks without scarring or atrophy.
Glossitis, Benign Migratory
an idiopathic disorder of the tongue characterized by the loss of filiform papillae leaving reddened areas of circinate macules bound by a white band. the lesions heal, then others erupt.
Necrolytic Migratory Erythema
recurrent cutaneous manifestation of glucagonoma characterized by necrolytic polycyclic migratory lesions with scaling borders. it is associated with elevated secretion of glucagon by the tumor. other conditions with elevated serum glucagon levels such as hepatic cirrhosis may also result in similar skin lesions, which are referred to as pseudoglucagonoma syndrome.
Rosacea
a cutaneous disorder primarily of convexities of the central part of the face, such as forehead; cheek; nose; and chin. it is characterized by flushing; erythema; edema; rhinophyma; papules; and ocular symptoms. it may occur at any age but typically after age 30. there are various subtypes of rosacea: erythematotelangiectatic, papulopustular, phymatous, and ocular (national rosacea society's expert committee on the classification and staging of rosacea, j am acad dermatol 2002; 46:584-7).
Laser Therapy
the use of photothermal effects of lasers to coagulate, incise, vaporize, resect, dissect, or resurface tissue.
Lyme Disease
an infectious disease caused by a spirochete, borrelia burgdorferi, which is transmitted chiefly by ixodes dammini (see ixodes) and pacificus ticks in the united states and ixodes ricinis (see ixodes) in europe. it is a disease with early and late cutaneous manifestations plus involvement of the nervous system, heart, eye, and joints in variable combinations. the disease was formerly known as lyme arthritis and first discovered at old lyme, connecticut.
Rubella
an acute infectious disease caused by the rubella virus. the virus enters the respiratory tract via airborne droplet and spreads to the lymphatic system.
References found for this diagnosis code in the External Cause of Injuries Index:
- Erythema, erythematous(infectional) (inflammation)
- Erythroderma(secondary)
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: 695.9
This is a direct match with no additional mapping qualifiers. The absence of a flag generally means the mapping is considered exact or precise. In other words, the ICD-10 code maps cleanly to the ICD-9 code without qualification, approximation, or needing multiple codes.
Skin Conditions
What does your skin do?
Your skin is your body's largest organ. It covers the entire outside of your body. There are many ways that your skin protects your body and helps keep you healthy. For example, it:
- Holds body fluids in, which helps prevent you from getting dehydrated
- Keeps out harmful germs, which helps prevent infections
- Helps you feel things like heat, cold, and pain
- Helps control your body temperature
- Makes vitamin D when the sun shines on it
- Shields your body against heat and light
What problems and conditions can affect your skin?
There are many different problems and conditions which can affect your skin. Some of them can cause uncomfortable symptoms, such as itching, burning, redness, and rashes. They might also affect your appearance. Some of the more common skin conditions include:
- Acne, which causes pimples when hair follicles under your skin get clogged up
- Burns
- Cuts and scrapes
- Dandruff, flaking of the skin on your scalp (the top of your head)
- Eczema (atopic dermatitis), which causes inflammation, redness, and irritation of the skin
- Hives, which are red and sometimes itchy bumps on your skin
- Insect bites
- Psoriasis, which causes itchy, scaly red patches
- Skin cancer
- Skin infections
How can I keep my skin healthy?
Since your skin protects your body in many ways, it's important to try to keep your skin healthy. For example, you can:
- Wear the right protective equipment, like gloves, long sleeves, knee and elbow pads, or helmets to protect against cuts, bumps and scrapes.
- If you do get a cut or scrape, clean it right away with soap and warm water. Put on a bandage to protect it while it heals.
- When you are spending time outdoors, wear long sleeves and pants and use insect repellant to prevent insect bites.
- Prevent sunburn by covering up and using sunscreen when outdoors.
- Wash your hands often with soap and water.
- When you take a shower or bath, use warm (not hot) water. Use mild cleansers and wash gently (don't scrub).
- Use moisturizers, like lotions, creams, or ointments, to prevent dry skin.
NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases
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.
