C83.89
BillableOther non-follicular lymphoma, extranodal and solid organ sites
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is C83.89 an HCC code?
Yes. C83.89 maps to Breast, Prostate, Colorectal and Other Cancers and Tumors under the CMS-HCC V28 risk adjustment model (and Lymphoma and Other Cancers under V24).
HCC Category Mapping
RAF weights shown are the community, non-dual, aged base weights from the CMS risk adjustment model file. Actual per-patient RAF contribution depends on member segment, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains in use during the transition and for historical data.
MEAT Criteria for C83.89
For C83.89 to count as a valid HCC diagnosis in a given encounter, the provider's documentation must show MEAT: Monitor, Evaluate, Assess, or Treat. A diagnosis from a prior year does not carry forward automatically — it has to be re-documented and supported each calendar year.
- MMonitor: signs, symptoms, disease progression, or lab trending documented in the note
- EEvaluate: test results, medication response, or physical findings reviewed by the provider
- AAssess: explicit mention in the assessment or plan with acknowledgment of status
- TTreat: medication, referral, procedure, therapy, or counseling tied to the diagnosis
Only one of M/E/A/T is required to support the code, but the documentation must be specific enough to show that the provider actually addressed C83.89 during that encounter — not just copy-forwarded from a problem list.
What This Code Means
C83.89 is the ICD-10-CM diagnosis code for other non-follicular lymphoma, extranodal and solid organ sites. A type of blood cancer (non-follicular lymphoma) that has spread to organs outside the lymph node system, such as the liver, lungs, or other solid organs. C83.89 sits in the ICD-10-CM chapter for neoplasms (c00-d49), within the section covering malignant neoplasms of lymphoid, hematopoietic and related tissue (c81-c96).
Under the CMS-HCC V28 risk adjustment model, C83.89 maps to Breast, Prostate, Colorectal and Other Cancers and Tumors (HCC 21) with a community, non-dual, aged base RAF weight of 0.545. Under the older CMS-HCC V24 model, C83.89 maps to Lymphoma and Other Cancers (HCC 10) with a community, non-dual, aged base RAF weight of 0.675. V28 is the CMS-HCC risk adjustment model that reached 100% phase-in for payment year 2026, replacing V24 which was used during the PY2024–PY2025 transition.
Identify and document the specific extranodal sites involved for treatment planning. Because C83.89 maps to a payment HCC, the provider's documentation must satisfy MEAT criteria (Monitor, Evaluate, Assess, or Treat) for the encounter to count toward the patient's Medicare Advantage risk adjustment score. When documentation is ambiguous, coders should issue a provider query rather than assume the highest-specificity variant.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for C83.89 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Identify and document the specific extranodal sites involved for treatment planning
- •This code indicates more advanced disease; verify staging information in medical record
Clinical Significance
Other non-follicular lymphoma at extranodal and solid organ sites indicates the lymphoma has spread beyond the lymph node system into solid organs such as the gastrointestinal tract, bone marrow, central nervous system, liver, or lungs. Extranodal lymphoma often presents unique diagnostic and treatment challenges, including the need for organ-specific treatment approaches. This code captures advanced disease complexity.
Documentation Requirements
- ✓Pathology confirming non-follicular lymphoma subtype
- ✓Documentation of specific extranodal organs involved
- ✓Imaging or biopsy confirming organ involvement
- ✓Staging reflecting extranodal disease
- ✓Treatment plan addressing organ-specific involvement
Commonly Confused Codes
- •C83.88 — Other non-follicular lymphoma, multiple sites: C83.88 is for multiple lymph node regions; C83.89 is for non-nodal organ involvement
- •C83.87 — Other non-follicular lymphoma, spleen: Splenic involvement has its own dedicated code separate from the general extranodal code
- •C78-C79 series — Secondary malignant neoplasms: Do not use metastasis codes for lymphoma organ involvement; lymphoma is a systemic disease coded with its primary code