Is L12.0 a billable ICD-10-CM code?

Yes. L12.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does L12.0 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 L12.0?

L12.0 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 L12.0 (L12) and apply to it just the same.

L12.0

L12.0 — Bullous pemphigoid

Billable / specific codeICD-10-CM

L12.0 is a billable, specific ICD-10-CM code for bullous pemphigoid. It is valid for submission on a claim.

Excludes1 inherited from the categories above L12.0

These are not written on L12.0, but they bind it: a note on a category applies to every code beneath it. Billing L12.0 with anything listed here is a denial.

Written on L12 — Pemphigoid

herpes gestationis (O26.4-)
impetigo herpetiformis (L40.1)

Other codes that can never be billed with L12.0

These codes carry an Excludes1 note pointing at L12.0. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading L12.0 alone.

L13.0Dermatitis herpetiformis

Risk adjustment

L12.0 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

HCC 387 Pemphigus, Pemphigoid, and Other Specified Autoimmune Skin Disorders0.406 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.

Medicare coverage

L12.0 is named in 15 Medicare coverage policies — 15 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
A55639Billing and Coding: Chemotherapy Agents for Non-Oncologic Conditions

How L12.0 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 L12.0.

Pemphigoid›bullous
Dermatitis›herpetiformis›senile
Erythema, erythematous›multiforme›pemphigoides
Herpes, herpesvirus, herpetic›circinatus›bullosus

Code history

L12.0 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 L12. If L12.0 is not quite right, the correct code is usually one of these.

Questions about L12.0

Is L12.0 a billable ICD-10-CM code?: Yes. L12.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does L12.0 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 L12.0?: L12.0 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 L12.0 (L12) and apply to it just the same.