Is C81 a billable ICD-10-CM code?

No. C81 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does C81 sit in the tabular list?

Neoplasms (C00-D49), in the block Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96).

What cannot be coded together with C81?

C81 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

C81

C81 — Hodgkin lymphoma

Non-billable headerICD-10-CM

C81 is a non-billable header ICD-10-CM code for hodgkin lymphoma. 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.

personal history of Hodgkin lymphoma (Z85.71)

Other codes that can never be billed with C81

These codes carry an Excludes1 note pointing at C81. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading C81 alone.

C76Malignant neoplasm of other and ill-defined sites
C77Secondary and unspecified malignant neoplasm of lymph nodes
C81.4Lymphocyte-rich Hodgkin lymphoma
C26.1Malignant neoplasm of spleen

Risk adjustment

C81 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 C81

7 child codes. Green means billable.

Questions about C81

Is C81 a billable ICD-10-CM code?: No. C81 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does C81 sit in the tabular list?: Neoplasms (C00-D49), in the block Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96).
What cannot be coded together with C81?: C81 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.