Is C83.9 a billable ICD-10-CM code?

No. C83.9 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does C83.9 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 C83.9?

C83.9 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 C83.9 (C83) and apply to it just the same.

C83.9

C83.9 — Non-follicular (diffuse) lymphoma, unspecified

Non-billable headerICD-10-CM

C83.9 is a non-billable header ICD-10-CM code for non-follicular (diffuse) lymphoma, unspecified. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 inherited from the categories above C83.9

These are not written on C83.9, but they bind it: a note on a category applies to every code beneath it. Billing C83.9 with anything listed here is a denial.

Written on C83 — Non-follicular lymphoma

personal history of non-Hodgkin lymphoma (Z85.72)

Risk adjustment

C83.9 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

C83.9 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 C83.9

11 child codes. Green means billable.

Related codes at this level

Codes that share C83. If C83.9 is not quite right, the correct code is usually one of these.

Questions about C83.9

Is C83.9 a billable ICD-10-CM code?: No. C83.9 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does C83.9 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 C83.9?: C83.9 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 C83.9 (C83) and apply to it just the same.