C84.49 — Peripheral T-cell lymphoma, not elsewhere classified, extranodal and solid organ sites
C84.49 is a billable, specific ICD-10-CM code for peripheral t-cell lymphoma, not elsewhere classified, extranodal and solid organ sites. It is valid for submission on a claim.
Other codes that can never be billed with C84.49
These codes carry an Excludes1 note pointing at C84.49. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading C84.49 alone.
- C83.390Primary central nervous system lymphoma
Risk adjustment
C84.49 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 19 Myelodysplastic Syndromes, Multiple Myeloma, and Other Cancers1.798 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
C84.49 is named in 48 Medicare coverage policies — 48 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
How C84.49 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 C84.49.
- Lymphoma›primary central nervous system›peripheral T-cell
Related codes at this level
Codes that share C84.4. If C84.49 is not quite right, the correct code is usually one of these.
- C84.40Peripheral T-cell lymphoma, not elsewhere classified, unspecified site
- C84.41Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of head, face, and neck
- C84.42Peripheral T-cell lymphoma, not elsewhere classified, intrathoracic lymph nodes
- C84.43Peripheral T-cell lymphoma, not elsewhere classified, intra-abdominal lymph nodes
- C84.44Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of axilla and upper limb
- C84.45Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of inguinal region and lower limb
- C84.46Peripheral T-cell lymphoma, not elsewhere classified, intrapelvic lymph nodes
- C84.47Peripheral T-cell lymphoma, not elsewhere classified, spleen
- C84.48Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of multiple sites
- C84.4APeripheral T-cell lymphoma, not elsewhere classified, in remission
Questions about C84.49
- Is C84.49 a billable ICD-10-CM code?
- Yes. C84.49 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does C84.49 sit in the tabular list?
- Neoplasms (C00-D49), in the block Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96).