Is L10.5 a billable ICD-10-CM code?

Yes. L10.5 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does L10.5 sit in the tabular list?

Diseases of the skin and subcutaneous tissue (L00-L99), in the block Bullous disorders (L10-L14).

What cannot be coded together with L10.5?

L10.5 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above L10.5 (L10) and apply to it just the same.

L10.5

L10.5 — Drug-induced pemphigus

Billable / specific codeICD-10-CM

L10.5 is a billable, specific ICD-10-CM code for drug-induced pemphigus. It is valid for submission on a claim.

Use additional code

Add a secondary code to capture the detail described below.

code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Excludes1 inherited from the categories above L10.5

These are not written on L10.5, but they bind it: a note on a category applies to every code beneath it. Billing L10.5 with anything listed here is a denial.

Written on L10 — Pemphigus

pemphigus neonatorum (L01.03)

Risk adjustment

L10.5 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

L10.5 is named in 12 Medicare coverage policies — 12 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A54641Billing and Coding: Intravenous Immune Globulin (IVIg)-NCD 250.3
A54643Billing and Coding: Intravenous Immune Globulin (IVIg)-NCD 250.3
A55639Billing and Coding: Chemotherapy Agents for Non-Oncologic Conditions
A56380Billing and Coding: Rituximab

How L10.5 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to L10.5.

Pemphigus›drug-induced

Code history

L10.5 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share L10. If L10.5 is not quite right, the correct code is usually one of these.

Questions about L10.5

Is L10.5 a billable ICD-10-CM code?: Yes. L10.5 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does L10.5 sit in the tabular list?: Diseases of the skin and subcutaneous tissue (L00-L99), in the block Bullous disorders (L10-L14).
What cannot be coded together with L10.5?: L10.5 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above L10.5 (L10) and apply to it just the same.