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ICD-10-CM 2027 diagnosis code

L57Skin changes due to chronic exposure to nonionizing radiation

Not billable — use a more specific code

L57 is a header code, so it can't be reported by itself. Choose one of the 8 more specific codes beneath it.Short description: Skin changes due to chronic expsr to nonionizing radiation

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 L57

L57 is the ICD-10-CM diagnosis code for skin changes due to chronic exposure to nonionizing 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: L57.0 (keratosis), L57.1 (reticuloid), L57.2 (nuchae), L57.3 (Civatte), L57.4 (senilis), L57.5 (granuloma), L57.8 (radiation) and L57.9 (unspecified).

Use an additional code to identify the source of the ultraviolet radiation (W89), or other nonionizing radiation (W90).

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 L57

Coding notes

Use additional codeAdd a secondary code to fully describe the condition
  • code to identify the source of the ultraviolet radiation (W89), or other nonionizing radiation (W90)

Notes that apply from higher levels

Instructions written at a parent level also apply to L57.

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

Codes whose notes reference L57

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about L57

Is L57 billable?

No. L57 is a header code. Report one of its more specific subcodes instead.