M89.651
BillableOsteopathy after poliomyelitis, right thigh
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is M89.651 an HCC code?
Yes. M89.651 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 M89.651
For M89.651 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 M89.651 during that encounter — not just copy-forwarded from a problem list.
What This Code Means
M89.651 is the ICD-10-CM diagnosis code for osteopathy after poliomyelitis, right thigh. Bone disease that develops as a long-term consequence of polio infection, affecting the right thigh. M89.651 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, M89.651 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, M89.651 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 post-polio sequelae affecting bone structure; ensure polio history is documented. Because M89.651 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 M89.651 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 post-polio sequelae affecting bone structure; ensure polio history is documented
- •Verify laterality is clearly documented as right before assigning this code
Clinical Significance
Right thigh post-polio osteopathy represents chronic bone changes in the right femur following poliomyelitis infection, potentially affecting hip and knee function as well as weight-bearing capacity. This condition can significantly impact mobility and requires ongoing orthopedic management.
Documentation Requirements
- ✓Clear history of previous poliomyelitis infection
- ✓Specific identification of right thigh (femoral) involvement
- ✓Imaging evidence of post-polio osteopathic changes
- ✓Assessment of right hip and knee function
- ✓Weight-bearing capacity and gait analysis
- ✓Pain evaluation and mobility limitations
- ✓Physical therapy needs and assistive device requirements
- ✓Integration with comprehensive post-polio syndrome care