Is D00.0 a billable ICD-10-CM code?

No. D00.0 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does D00.0 sit in the tabular list?

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

What cannot be coded together with D00.0?

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

D00.0

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

Non-billable headerICD-10-CM

D00.0 is a non-billable header ICD-10-CM code for carcinoma in situ of lip, oral cavity and pharynx. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

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)

Use additional code

Add a secondary code to capture the detail described below.

code to identify:
exposure to environmental tobacco smoke (Z77.22)
exposure to tobacco smoke in the perinatal period (P96.81)
history of tobacco dependence (Z87.891)
occupational exposure to environmental tobacco smoke (Z57.31)
tobacco dependence (F17.-)
tobacco use (Z72.0)

Excludes1 inherited from the categories above D00.0

These are not written on D00.0, but they bind it: a note on a category applies to every code beneath it. Billing D00.0 with anything listed here is a denial.

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

melanoma in situ (D03.-)

Other codes that can never be billed with D00.0

These codes carry an Excludes1 note pointing at D00.0. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading D00.0 alone.

K13.2Leukoplakia and other disturbances of oral epithelium, including tongue
D02.0Carcinoma in situ of larynx

Risk adjustment

D00.0 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.

Code history

D00.0 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead D00.0

9 child codes. Green means billable.

Related codes at this level

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

Questions about D00.0

Is D00.0 a billable ICD-10-CM code?: No. D00.0 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does D00.0 sit in the tabular list?: Neoplasms (C00-D49), in the block In situ neoplasms (D00-D09).
What cannot be coded together with D00.0?: D00.0 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 D00.0 (D00) and apply to it just the same.