L27
Non-billableDermatitis due to substances taken internally
L27 is the ICD-10-CM code for Dermatitis due to substances taken internally. It is a non-billable category code — use a more specific child code such as L27.0 for billing.
- Status
- Header (non-billable)
- Chapter
- L00-L99
- Subcodes
- 5
- Edition
- FY2026
L00-L99 Diseases of the skin and subcutaneous tissue
What this means — in plain language
MedlinePlus · NIHA rash is an area of irritated or swollen skin. Many rashes are itchy, red, painful, and irritated. Some rashes can also lead to blisters or patches of raw skin. Rashes are a symptom of many different medical problems. Other causes include irritating substances and allergies. Certain genes can make people more likely to get rashes. Contact dermatitis is a common type of rash. It causes redness, itching, and…
Read more about Rashes at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Excludes1 — not coded here
- •allergy NOS (T78.40)
Excludes2 — not included here
Conditions mapped to this code
MedlinePlus · NIHPlain-language health-topic references grounded in MedlinePlus (NIH/NLM).
Frequently asked questions
- What is ICD-10 code L27?
- L27 is the ICD-10-CM code for "Dermatitis due to substances taken internally". It falls under L00-L99 Diseases of the skin and subcutaneous tissue.
- Is L27 a billable code?
- No — L27 is a non-billable header code. Use a more specific child code (such as L27.0) for billing.
- What is excluded from L27?
- Excludes1 (not coded here): allergy NOS (T78.40).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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