M89.672
BillableOsteopathy after poliomyelitis, left ankle and foot
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is M89.672 an HCC code?
Yes. M89.672 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 M89.672
For M89.672 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 M89.672 during that encounter — not just copy-forwarded from a problem list.
What This Code Means
M89.672 is the ICD-10-CM diagnosis code for osteopathy after poliomyelitis, left ankle and foot. Bone disease that develops as a complication of poliomyelitis affecting the left ankle and foot, causing weakening or deformity of the bone in that area. M89.672 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, M89.672 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, M89.672 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.
Verify the patient has documented history of poliomyelitis to justify this post-polio complication code. Because M89.672 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 M89.672 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Verify the patient has documented history of poliomyelitis to justify this post-polio complication code
- •The fifth character '2' indicates left side; ensure this is clearly documented in the medical record
Clinical Significance
This represents post-polio osteopathy affecting the left ankle and foot, a late complication of poliomyelitis that can significantly impact mobility and quality of life. The condition requires ongoing monitoring and management as it maps to high-value HCC categories with substantial RAF scores.
Documentation Requirements
- ✓History of poliomyelitis infection documented
- ✓Specific anatomical location (left ankle and foot) clearly identified
- ✓Clinical evidence of bone pathology or deformity
- ✓Relationship between current bone condition and prior polio established
- ✓Current functional status and mobility limitations noted
- ✓Imaging studies supporting osteopathy diagnosis
- ✓Treatment plan for bone/joint complications documented