2027 ICD-10-CM Diagnosis Code L59Other disorders of skin and subcutaneous tissue related to radiation

ICD-10-CM Codes›L00–L99›L55-L59›L59

ICD-10-CM L59
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

L59 is a non-billable ICD-10-CM category code for other disorders of skin and subcutaneous tissue related to radiation, so it cannot be submitted on claims. Use a more specific code from this category instead, such as L59.0, L59.8, and L59.9.

Code Identity

ICD-10-CM Code
L59
Billable Status
No — Non-Billable Category
Code Describes
Other disorders of skin and subcutaneous tissue related to radiation
Short Description
Oth disorders of skin, subcu related to radiation
Chapter
L55-L59
Radiation-related disorders of the skin and subcutaneous tissue

Code Classification

ChapterL00–L99Diseases of the skin and subcutaneous tissue
SectionL55-L59Radiation-related disorders of the skin and subcutaneous tissue
CategoryL59Other disorders of skin and subcutaneous tissue related to radiation
This CodeL59Other disorders of skin and subcutaneous tissue related to radiation

Specific Coding for Oth disorders of skin, subcu related to radiationOverview

Non-specific codes like L59 require more characters. Use one of these billable codes instead:

  • Use L59.0 for Erythema ab igne [dermatitis ab igne]

  • Use L59.8 for Other specified disorders of the skin and subcutaneous tissue related to radiation

  • Use L59.9 for Disorder of the skin and subcutaneous tissue related to radiation, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to L59: its own notes plus those printed at Chapter 12. A note printed at a category, block or chapter applies to every code under it.

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 12 (L00-L99) Diseases of the skin and subcutaneous tissue applies to 1,001 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • lipomelanotic reticulosis (I89.8)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • viral warts (B07.-)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name L59, its category, or a range that includes it.

Excludes1 3

These codes carry an Excludes1 note naming L59: they are not reported together with it, unless the two conditions are unrelated.

  • K13.0 Diseases of lips
    cheilitis due to radiation-related disorders (L55-L59) names L55-L59, which includes this code
  • T66 Radiation sickness, unspecified
    radiation related disorders of the skin and subcutaneous tissue (L55-L59) names L55-L59, which includes this code
  • T67 Effects of heat and light
    radiation-related disorders of the skin and subcutaneous tissue (L55-L59) names L55-L59, which includes this code

Excludes2 6

These codes carry an Excludes2 note naming L59: its condition is not part of those codes, and both may be reported when the patient has both.

  • Block L20-L30 Dermatitis and eczema
    radiation-related disorders of the skin and subcutaneous tissue (L55-L59) names L55-L59, which includes this code
  • L23 Allergic contact dermatitis
    radiation-related disorders of the skin and subcutaneous tissue (L55-L59) names L55-L59, which includes this code
  • L24 Irritant contact dermatitis
    radiation-related disorders of the skin and subcutaneous tissue (L55-L59) names L55-L59, which includes this code
  • L25 Unspecified contact dermatitis
    radiation-related disorders of the skin and subcutaneous tissue (L55-L59) names L55-L59, which includes this code
  • Block T20-T32
    radiation-related disorders of the skin and subcutaneous tissue (L55-L59) names L55-L59, which includes this code
  • X32 Exposure to sunlight
    radiation-related disorders of the skin and subcutaneous tissue (L55-L59) names L55-L59, which includes this code

Patient EducationClinical

Radiation Exposure

Radiation is energy. It travels in the form of energy waves or high-speed particles. Radiation can occur naturally or be man-made. There are two types:

The full article covers:

  • What is radiation?
  • What are the sources of radiation exposure?
  • What are the health effects of radiation exposure?
  • What are the treatments for acute radiation sickness?
  • How can radiation exposure be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About L59Overview

What is the ICD-10 code for other disorders of skin and subcutaneous tissue related to radiation?

L59 is the ICD-10-CM category for other disorders of skin and subcutaneous tissue related to radiation, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is L59 a billable code?

No. This is a category header that groups the codes for other disorders of skin and subcutaneous tissue related to radiation, and headers cannot be submitted on claims. Claims for other disorders of skin and subcutaneous tissue related to radiation need a more specific code from this category, such as L59.0, L59.8, and L59.9.