M89.652
BillableOsteopathy after poliomyelitis, left thigh
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is M89.652 an HCC code?
Yes. M89.652 maps to Bone/Joint/Muscle Infections/Necrosis under the CMS-HCC V28 risk adjustment model (and Bone/Joint/Muscle Infections/Necrosis 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 M89.652
For M89.652 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 M89.652 during that encounter — not just copy-forwarded from a problem list.
What This Code Means
M89.652 is the ICD-10-CM diagnosis code for osteopathy after poliomyelitis, left thigh. Bone disease that develops as a complication of poliomyelitis affecting the left thigh, causing weakening or deformity of the bone in that area. M89.652 sits in the ICD-10-CM chapter for diseases of the musculoskeletal system and connective tissue (m00-m99), within the section covering other osteopathies (m86-m90).
Under the CMS-HCC V28 risk adjustment model, M89.652 maps to Bone/Joint/Muscle Infections/Necrosis (HCC 92) with a community, non-dual, aged base RAF weight of 0.209. Under the older V24 model, M89.652 mapped to the same category but with a base RAF weight of 0.482 — V28 recalibrated weights across the entire model. 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.
This code is used for late effects of polio; ensure the patient has a documented history of poliomyelitis. Because M89.652 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 M89.652 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This code is used for late effects of polio; ensure the patient has a documented history of poliomyelitis
- •The fifth character '2' specifically indicates the left thigh; verify laterality in documentation before coding
Clinical Significance
Left thigh post-polio osteopathy involves chronic bone deterioration in the left femur as a late consequence of poliomyelitis infection, potentially compromising hip and knee function and affecting overall mobility and independence. This represents a significant long-term sequela requiring comprehensive management.
Documentation Requirements
- ✓Documented history of previous poliomyelitis infection
- ✓Specific documentation of left thigh bone involvement
- ✓Current imaging showing post-polio changes in left femur
- ✓Left hip and knee functional assessment
- ✓Weight-bearing status and ambulatory capacity
- ✓Pain quantification and mobility limitations
- ✓Physical therapy recommendations and mobility aids
- ✓Coordination with comprehensive post-polio syndrome management