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L51

Non-billable

Erythema multiforme

L51 is the ICD-10-CM code for Erythema multiforme. It is a non-billable category code — use a more specific child code such as L51.0 for billing.

Status
Header (non-billable)
Chapter
L00-L99
Subcodes
6
Edition
FY2026

L00-L99 Diseases of the skin and subcutaneous tissue

What this means — in plain language

MedlinePlus · NIH

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…

Read more about Skin Conditions at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

Excludes1 — not coded here

  • •staphylococcal scalded skin syndrome (L00)
  • •Ritter's disease (L00)

Use additional code

  • •code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
  • •code to identify associated manifestations, such as:
  • •arthropathy associated with dermatological disorders (M14.8-)
  • •conjunctival edema (H11.42)
  • •conjunctivitis (H10.22-)
  • •corneal scars and opacities (H17.-)
  • •corneal ulcer (H16.0-)
  • •edema of eyelid (H02.84-)
  • •inflammation of eyelid (H01.8-)
  • •keratoconjunctivitis sicca (H16.22-)
  • •mechanical lagophthalmos (H02.22-)
  • •stomatitis (K12.-)
  • •symblepharon (H11.23-)
  • •code to identify percentage of skin exfoliation (L49.-)

Medications indicated for this condition

FDA labeling

Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.

Frequently asked questions

What is ICD-10 code L51?
L51 is the ICD-10-CM code for "Erythema multiforme". It falls under L00-L99 Diseases of the skin and subcutaneous tissue.
Is L51 a billable code?
No — L51 is a non-billable header code. Use a more specific child code (such as L51.0) for billing.
What are the subcodes of L51?
L51 has 6 more specific child codes, including L51.0, L51.1, L51.2.
What is excluded from L51?
Excludes1 (not coded here): staphylococcal scalded skin syndrome (L00); Ritter's disease (L00).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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