Is C05 a billable ICD-10-CM code?

No. C05 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does C05 sit in the tabular list?

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

What cannot be coded together with C05?

C05 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

C05

C05 — Malignant neoplasm of palate

Non-billable headerICD-10-CM

C05 is a non-billable header ICD-10-CM code for malignant neoplasm of palate. 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.

Kaposi's sarcoma of palate (C46.2)

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)

Risk adjustment

C05 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 C05

5 child codes. Green means billable.

Questions about C05

Is C05 a billable ICD-10-CM code?: No. C05 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does C05 sit in the tabular list?: Neoplasms (C00-D49), in the block Malignant neoplasms of lip, oral cavity and pharynx (C00-C14).
What cannot be coded together with C05?: C05 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.