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ICD-10-CM 2027 diagnosis code

L59Other disorders of skin and subcutaneous tissue related to radiation

Not billable — use a more specific code

L59 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.Short description: Oth disorders of skin, subcu related to 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 L59

L59 is the ICD-10-CM diagnosis code for other disorders of skin and subcutaneous tissue related to 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 3 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: L59.0 (igne]), L59.8 (radiation) and L59.9 (unspecified).

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 L59

Notes that apply from higher levels

Instructions written at a parent level also apply to L59.

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

Codes whose notes reference L59

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 L59

Is L59 billable?

No. L59 is a header code. Report one of its more specific subcodes instead.