Is L55 a billable ICD-10-CM code?

No. L55 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does L55 sit in the tabular list?

Diseases of the skin and subcutaneous tissue (L00-L99), in the block Radiation-related disorders of the skin and subcutaneous tissue (L55-L59).

L55

L55 — Sunburn

Non-billable headerICD-10-CM

L55 is a non-billable header ICD-10-CM code for sunburn. It cannot be billed on its own: choose one of the more specific child codes below.

Other codes that can never be billed with L55

These codes carry an Excludes1 note pointing at L55. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading L55 alone.

K13.0Diseases of lips
T66Radiation sickness, unspecified
T66.XXXARadiation sickness, unspecified, initial encounter
T66.XXXDRadiation sickness, unspecified, subsequent encounter
T66.XXXSRadiation sickness, unspecified, sequela
T67Effects of heat and light

Risk adjustment

L55 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 L55

4 child codes. Green means billable.

Questions about L55

Is L55 a billable ICD-10-CM code?: No. L55 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does L55 sit in the tabular list?: Diseases of the skin and subcutaneous tissue (L00-L99), in the block Radiation-related disorders of the skin and subcutaneous tissue (L55-L59).