L59.9 ICD-10-CA code: Disorder of skin and subcutaneous tissue related to radiation, unspecified
L59.9 is the ICD-10-CA code for “Disorder of skin and subcutaneous tissue related to radiation, unspecified” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
L59.9Disorder of skin and subcutaneous tissue related to radiation, unspecified
Short description: Radiation rel disrd skin subc tis NOS
ICD-10-CA · Canada · Also written L599
Index terms
Entries in CIHI’s alphabetical index that lead to L59.9. Searching the index by the condition the note names is how coders reach this code.
- Effect, adverse NEC, radiation (diagnostic) (fallout) (infrared) (natural source) (therapeutic) (tracer) (ultraviolet) (Xray) NEC, skin
Notes for L59.9
As CIHI prints them, with any note L59.9 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- Certain:• conditions originating in the perinatal period (P00-P96)• infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)lipomelanotic reticulosis (I89.8)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)systemic connective tissue disorders (M30-M36)From Chapter 12: Diseases of the skin and subcutaneous tissue (L00-L99)
Where L59.9 sits
- 1ChapterChapter 12: Diseases of the skin and subcutaneous tissue (L00-L99)
- 2Block L55-L59Radiation-related disorders of the skin and subcutaneous tissue
- 3Category L59Other disorders of skin and subcutaneous tissue related to radiation
- 4Valid code L59.9Disorder of skin and subcutaneous tissue related to radiation, unspecified
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code L59.9 mean?
L59.9 is the ICD-10-CA code for “Disorder of skin and subcutaneous tissue related to radiation, unspecified” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is L59.9 in ICD-10-CA?
L59.9 sits under L59 Other disorders of skin and subcutaneous tissue related to radiation, within L55-L59 Radiation-related disorders of the skin and subcutaneous tissue, within Chapter 12: Diseases of the skin and subcutaneous tissue (L00-L99).
What coding notes apply to L59.9?
ICD-10-CA lists Excludes notes for L59.9, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.