Is L91 a billable ICD-10-CM code?

No. L91 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does L91 sit in the tabular list?

Diseases of the skin and subcutaneous tissue (L00-L99), in the block Other disorders of the skin and subcutaneous tissue (L80-L99).

L91

L91 — Hypertrophic disorders of skin

Non-billable headerICD-10-CM

L91 is a non-billable header ICD-10-CM code for hypertrophic disorders of skin. It cannot be billed on its own: choose one of the more specific child codes below.

Risk adjustment

L91 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 to one of these instead L91

3 child codes. Green means billable.

L91.0Hypertrophic scar
L91.8Other hypertrophic disorders of the skin
L91.9Hypertrophic disorder of the skin, unspecified

Questions about L91

Is L91 a billable ICD-10-CM code?: No. L91 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does L91 sit in the tabular list?: Diseases of the skin and subcutaneous tissue (L00-L99), in the block Other disorders of the skin and subcutaneous tissue (L80-L99).