C81 — Hodgkin lymphoma
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.
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 history
C81 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 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 Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.