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X39.08XS

X39.08XS: Exposure to other natural radiation, sequela

Billable / specific codeICD-10-CMPOA exempt

X39.08XS is a billable, specific ICD-10-CM code for exposure to other natural radiation, sequela. It is valid for submission on a claim.

Check X39.08XS with the rest of the claim: free scrubber

7th character "S": sequela

The appropriate 7th character is to be added to each code from category X39

A
initial encounter
D
subsequent encounter
S
sequela

Excludes1 inherited from the categories above X39.08XS

A category’s note binds every code beneath it.

Written on X39.0: Exposure to natural radiation

  • contact with and (suspected) exposure to radon and other naturally occurring radiation (Z77.123)
  • exposure to man-made radiation (W88-W90)
  • exposure to sunlight (X32)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under X39.08

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.