Is C85.21 a billable ICD-10-CM code?

Yes. C85.21 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does C85.21 sit in the tabular list?

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

C85.21

C85.21 — Mediastinal (thymic) large B-cell lymphoma, lymph nodes of head, face, and neck

Billable / specific codeICD-10-CM

C85.21 is a billable, specific ICD-10-CM code for mediastinal (thymic) large b-cell lymphoma, lymph nodes of head, face, and neck. It is valid for submission on a claim.

Risk adjustment

C85.21 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

HCC 21 Lymphoma and Other Cancers0.671 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.

Medicare coverage

C85.21 is named in 59 Medicare coverage policies — 59 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A52450Billing and Coding: Paclitaxel (e.g., Taxol®/Abraxane ™)
A52479Oral Anticancer Drugs - Policy Article
A52479Oral Anticancer Drugs - Policy Article
A52479Oral Anticancer Drugs - Policy Article

Related codes at this level

Codes that share C85.2. If C85.21 is not quite right, the correct code is usually one of these.

Questions about C85.21

Is C85.21 a billable ICD-10-CM code?: Yes. C85.21 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does C85.21 sit in the tabular list?: Neoplasms (C00-D49), in the block Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96).