Is C06 a billable ICD-10-CM code?

No. C06 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does C06 sit in the tabular list?

Neoplasms (C00-D49), in the block Malignant neoplasms of lip, oral cavity and pharynx (C00-C14).

C06

C06 — Malignant neoplasm of other and unspecified parts of mouth

Non-billable headerICD-10-CM

C06 is a non-billable header ICD-10-CM code for malignant neoplasm of other and unspecified parts of mouth. It cannot be billed on its own: choose one of the more specific child codes below.

Use additional code

Add a secondary code to capture the detail described below.

code to identify:
alcohol abuse and dependence (F10.-)
history of tobacco dependence (Z87.891)
tobacco dependence (F17.-)
tobacco use (Z72.0)

Other codes that can never be billed with C06

These codes carry an Excludes1 note pointing at C06. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading C06 alone.

C14Malignant neoplasm of other and ill-defined sites in the lip, oral cavity and pharynx
C14.8Malignant neoplasm of overlapping sites of lip, oral cavity and pharynx

Risk adjustment

C06 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 to one of these instead C06

5 child codes. Green means billable.

Questions about C06

Is C06 a billable ICD-10-CM code?: No. C06 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does C06 sit in the tabular list?: Neoplasms (C00-D49), in the block Malignant neoplasms of lip, oral cavity and pharynx (C00-C14).