D02.4 — Carcinoma in situ of respiratory system, unspecified
D02.4 is a billable, specific ICD-10-CM code for carcinoma in situ of respiratory system, unspecified. It is valid for submission on a claim.
Excludes1 inherited from the categories above D02.4
These are not written on D02.4, but they bind it: a note on a category applies to every code beneath it. Billing D02.4 with anything listed here is a denial.
Risk adjustment
D02.4 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
D02.4 is named in 7 Medicare coverage policies — 7 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
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- A57788Billing and Coding: Peripheral Nerve Blocks
Code history
D02.4 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share D02. If D02.4 is not quite right, the correct code is usually one of these.
Questions about D02.4
- Is D02.4 a billable ICD-10-CM code?
- Yes. D02.4 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does D02.4 sit in the tabular list?
- Neoplasms (C00-D49), in the block In situ neoplasms (D00-D09).
- What cannot be coded together with D02.4?
- D02.4 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above D02.4 (D02) and apply to it just the same.