Is L12.3 a billable ICD-10-CM code?

No. L12.3 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does L12.3 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 L12.3?

L12.3 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 L12.3 (L12) and apply to it just the same.

L12.3

L12.3 — Acquired epidermolysis bullosa

Non-billable headerICD-10-CM

L12.3 is a non-billable header ICD-10-CM code for acquired epidermolysis bullosa. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

epidermolysis bullosa (congenital) (Q81.-)

Excludes1 inherited from the categories above L12.3

These are not written on L12.3, but they bind it: a note on a category applies to every code beneath it. Billing L12.3 with anything listed here is a denial.

Written on L12 — Pemphigoid

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

Risk adjustment

L12.3 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.

Code history

L12.3 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead L12.3

3 child codes. Green means billable.

Related codes at this level

Codes that share L12. If L12.3 is not quite right, the correct code is usually one of these.

Questions about L12.3

Is L12.3 a billable ICD-10-CM code?: No. L12.3 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does L12.3 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 L12.3?: L12.3 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 L12.3 (L12) and apply to it just the same.