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C83.59

C83.59Lymphoblastic (diffuse) lymphoma, extranodal and solid organ sites

Billable / specific codeICD-10-CM

C83.59 is a billable, specific ICD-10-CM code for lymphoblastic (diffuse) lymphoma, extranodal and solid organ sites. It is valid for submission on a claim.

Other codes that can never be billed with C83.59

These codes carry an Excludes1 note pointing at C83.59. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading C83.59 alone.

  • C83.390Primary central nervous system lymphoma

Risk adjustment

C83.59 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 20 Lung and Other Severe Cancers1.136 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

C83.59 is named in 57 Medicare coverage policies 57 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A52479Oral Anticancer Drugs - Policy Article
  • A52479Oral Anticancer Drugs - Policy Article
  • A52479Oral Anticancer Drugs - Policy Article
  • A52479Oral Anticancer Drugs - Policy Article

How C83.59 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to C83.59.

  • Lymphomaprimary central nervous systemlymphoblastic

Related codes at this level

Codes that share C83.5. If C83.59 is not quite right, the correct code is usually one of these.

Questions about C83.59

Is C83.59 a billable ICD-10-CM code?
Yes. C83.59 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does C83.59 sit in the tabular list?
Neoplasms (C00-D49), in the block Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.