Is D00.00 a billable ICD-10-CM code?

Yes. D00.00 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does D00.00 sit in the tabular list?

Neoplasms (C00-D49), in the block In situ neoplasms (D00-D09).

What cannot be coded together with D00.00?

D00.00 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 D00.00 (D00.0, D00) and apply to it just the same.

D00.00

D00.00 — Carcinoma in situ of oral cavity, unspecified site

Billable / specific codeICD-10-CM

D00.00 is a billable, specific ICD-10-CM code for carcinoma in situ of oral cavity, unspecified site. It is valid for submission on a claim.

Excludes1 inherited from the categories above D00.00

These are not written on D00.00, but they bind it: a note on a category applies to every code beneath it. Billing D00.00 with anything listed here is a denial.

Written on D00.0 — Carcinoma in situ of lip, oral cavity and pharynx

carcinoma in situ of aryepiglottic fold or interarytenoid fold, laryngeal aspect (D02.0)
carcinoma in situ of epiglottis NOS (D02.0)
carcinoma in situ of epiglottis suprahyoid portion (D02.0)
carcinoma in situ of skin of lip (D03.0, D04.0)

Written on D00 — Carcinoma in situ of oral cavity, esophagus and stomach

melanoma in situ (D03.-)

Risk adjustment

D00.00 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

D00.00 is named in 12 Medicare coverage policies — 12 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A52480Oral Antiemetic Drugs (Replacement for Intravenous Antiemetics) - Policy Article
A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
A56695Billing and Coding: Implantable Infusion Pump
A56729Billing and Coding: Magnetic Resonance Imaging of the Head and Neck

Code history

D00.00 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 D00.0. If D00.00 is not quite right, the correct code is usually one of these.

Questions about D00.00

Is D00.00 a billable ICD-10-CM code?: Yes. D00.00 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does D00.00 sit in the tabular list?: Neoplasms (C00-D49), in the block In situ neoplasms (D00-D09).
What cannot be coded together with D00.00?: D00.00 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 D00.00 (D00.0, D00) and apply to it just the same.