ICD-10-CM 2027 diagnosis code

L56Other acute skin changes due to ultraviolet radiation

Not billable — use a more specific code

L56 is a header code, so it can't be reported by itself. Choose one of the 8 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About L56

L56 is the ICD-10-CM diagnosis code for other acute skin changes due to ultraviolet radiation. It belongs to block L55-L59 (Radiation-related disorders of the skin and subcutaneous tissue) and chapter 12 (diseases of the skin and subcutaneous tissue). It is a header code, so it can't be reported by itself; one of its 8 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: L56.0 (response), L56.1 (response), L56.2 (dermatitis]), L56.3 (urticaria), L56.4 (eruption), L56.5 ((DSAP)), L56.8 (radiation) and L56.9 (unspecified).

Use an additional code to identify the source of the ultraviolet radiation (W89, X32).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under L56

Coding notes

Use additional codeAdd a secondary code to fully describe the condition

code to identify the source of the ultraviolet radiation (W89, X32)

Notes that apply from higher levels

Instructions written at a parent level also apply to L56.

Broader instructions also apply from Chapter 12: Diseases of the skin and subcutaneous tissue.

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about L56

Is L56 billable?: No. L56 is a header code. Report one of its more specific subcodes instead.