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M89.622 ICD-10-CM Code: Osteopathy after poliomyelitis, left upper arm

M89.622 maps to CMS-HCC V28 92. A source-labeled RAF reference is available. Confirm the documented diagnosis and applicable coding requirements. MEAT criteria · RAF Calculator · HCC Buddy coding tools

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Code lookupM89.622

FY 2026 Apr update / Diseases of the musculoskeletal system and connective tissue (M00-M99) / Other osteopathies (M86-M90)

M89.622

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Osteopathy after poliomyelitis, left upper arm

Bone disease that develops as a long-term consequence of polio infection, affecting the left upper arm.

Buddy the Bee presenting code insight

Buddy Insight

Left upper arm post-polio osteopathy involves chronic bone deterioration in the left humerus as a late consequence of poliomyelitis infection, potentially compromising left arm function and strength.

OverviewRisk ModelsCode BookDocumentationAuditNotesEdition comparison

CMS-HCC V28

HCC 92

Code-level coefficient reference

CMS-HCC V24

Historical

Historical

Not used for CY2026 payment

ACA/HHS

HCC 055

Code-level coefficient reference

ESRD/PACE

HCC 39

Code-level coefficient reference

RXHCC

N/A

—

Not mapped

Code Book Path

Official
M89.6Osteopathy after poliomyelitisM89.62Osteopathy after poliomyelitis, upper armM89.622Osteopathy after poliomyelitis, left upper arm

Inclusion Terms

Official

No inclusion terms are included in this display for M89.622. Check the code and parent instructions in the Code Book.

Excludes 2

Official
  • arthropathic psoriasis (L40.5-)Inherited from M00-M99
  • certain conditions originating in the perinatal period (P04-P96)Inherited from M00-M99
  • certain infectious and parasitic diseases (A00-B99)Inherited from M00-M99
  • compartment syndrome (traumatic) (T79.A-)Inherited from M00-M99
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)Inherited from M00-M99
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Inherited from M00-M99
  • endocrine, nutritional and metabolic diseases (E00-E88)Inherited from M00-M99
  • injury, poisoning and certain other consequences of external causes (S00-T88)Inherited from M00-M99
  • neoplasms (C00-D49)Inherited from M00-M99
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)Inherited from M00-M99

Related Codes

Official
M89.621Osteopathy after poliomyelitis, right upper armM89.629Osteopathy after poliomyelitis, unspecified upper arm

Includes

Official

No Includes notes are included in this display for M89.622. Check the code and parent instructions in the Code Book.

Excludes 1

Official
  • postprocedural osteopathies (M96.-)Inherited from M86-M90, M89.6
  • postpolio syndrome (G14)Inherited from M86-M90, M89.6

Code First

Official

No Code First sequencing instructions are included in this display for M89.622. Check the code and parent instructions in the Code Book.

Use Additional

Official
  • code (B91) to identify previous poliomyelitisInherited from M89.6

Code Also

Official

No Code Also instructions are included in this display for M89.622. Check the code and parent instructions in the Code Book.

Buddy Documentation Tip

HCC Buddy guidance
Clear history of previous poliomyelitis infection
Specific documentation of left upper arm bone involvement
Current imaging showing post-polio osteopathic changes
Left arm functional assessment including strength testing

MEAT Support

HCC Buddy guidance
Clear history of previous poliomyelitis infection
Specific documentation of left upper arm bone involvement
Current imaging showing post-polio osteopathic changes
Left arm functional assessment including strength testing

Audit Caution

HCC Buddy guidance
Mixing up neurological versus bone manifestations of post-polio complications
Confusing left and right upper arm laterality
Missing the historical connection to poliomyelitis infection
Incorrectly coding as acute trauma or primary bone disease

Common Mistakes

HCC Buddy guidance
G14 — Post-polio syndrome primarily neurological, not bone-related
M25.522 — Left upper arm pain is symptomatic presentation only
M75.32 — Shoulder pathology affects joint, not humeral bone
S42.302A — Humeral fracture represents acute trauma

Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →

Is M89.622 an HCC code?

Yes. M89.622 (Osteopathy after poliomyelitis, left upper arm) maps to HCC 92, Bone/Joint/Muscle/Severe Soft Tissue Infections/Necrosis under the CMS-HCC V28 risk adjustment model, with a source-labeled community non-dual aged reference coefficient of 0.479. Source-labeled code-level coefficients are references, not member totals. Actual contribution depends on complete member context, hierarchy and cleanup rules, interactions, and model year. HCC Buddy's RAF Calculator supports CMS-HCC V28 PY2026 and shows no score unless every required source and calculation check passes. It is billable for payment year 2026.

Coder answer: M89.622 is billable and maps to V28 HCC 92, Bone/Joint/Muscle/Severe Soft Tissue Infections/Necrosis. Open it in the Code Book for the tabular path, RAF, and MEAT checklist.

Code
M89.622
Description
Osteopathy after poliomyelitis, left upper arm
HCC (V28)
HCC 92 — Bone/Joint/Muscle/Severe Soft Tissue Infections/Necrosis
RAF reference coefficient
0.479
Billable
Yes
Payment year
2026

HCC Category Mapping

V28HCC 92, Bone/Joint/Muscle/Severe Soft Tissue Infections/Necrosis
0.479
ESRDHCC 39, Bone/Joint/Muscle Infections/Necrosis
Not separately weighted

These are source-labeled model coefficients, not member totals. A category may still be removed by hierarchy or model cleanup rules. Weights are not directly comparable across models: CMS-HCC V28 and V24 use Community, Non-Dual, Aged; ESRD uses the dialysis continuing-enrollee model; RxHCC is the Part D continuing-enrollee, non-low-income, aged weight (a larger scale than CMS-HCC). ACA/HHS has no single weight — it varies by metal level. Actual per-patient RAF contribution depends on member context, hierarchy and cleanup rules, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains available for historical review.

Work M89.622 in the Code Book — tabular path, V28 RAF reference, and MEAT checklist →

MEAT review for M89.622

For M89.622, confirm that the documentation supports the diagnosis and meets the applicable coding, encounter, program and payer requirements. MEAT (Monitor, Evaluate, Assess, or Treat) is a review mnemonic, not a universal CMS coding rule.

  • 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

Coder workflow notes

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What This Code Means

M89.622 is the ICD-10-CM diagnosis code for osteopathy after poliomyelitis, left upper arm. Bone disease that develops as a long-term consequence of polio infection, affecting the left upper arm. M89.622 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, M89.622 maps to Bone/Joint/Muscle/Severe Soft Tissue Infections/Necrosis (HCC 92) with a source-labeled community, non-dual, aged reference coefficient of 0.479. No V24 mapping is shown for M89.622; use the applicable model and payment year when reviewing the V28 mapping. For CY2026 non-PACE Medicare Advantage, CMS uses 100% of the 2024 CMS-HCC model (V28). PACE uses a separate model blend. Source-labeled code-level coefficients are references, not member totals. Actual contribution depends on complete member context, hierarchy and cleanup rules, interactions, and model year. HCC Buddy's RAF Calculator supports CMS-HCC V28 PY2026 and shows no score unless every required source and calculation check passes.

This code is used for post-polio sequelae affecting bone structure; ensure polio history is documented. For M89.622, confirm that the documentation supports the diagnosis and meets the applicable coding, encounter, program and payer requirements. MEAT (Monitor, Evaluate, Assess, or Treat) is a review mnemonic, not a universal CMS coding rule. 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, source-labeled coefficient references, and MEAT documentation criteria for M89.622 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 left before assigning this code

Clinical Significance

Left upper arm post-polio osteopathy involves chronic bone deterioration in the left humerus as a late consequence of poliomyelitis infection, potentially compromising left arm function and strength. This condition represents a significant long-term sequela requiring specialized care.

Documentation Requirements

  • ✓Clear history of previous poliomyelitis infection
  • ✓Specific documentation of left upper arm bone involvement
  • ✓Current imaging showing post-polio osteopathic changes
  • ✓Left arm functional assessment including strength testing
  • ✓Pain quantification and impact on daily activities
  • ✓Occupational therapy evaluation and recommendations
  • ✓Adaptive equipment needs and environmental modifications
  • ✓Integration with comprehensive post-polio syndrome care

Commonly Confused Codes

  • •G14: Post-polio syndrome primarily neurological, not bone-related
  • •M25.522: Left upper arm pain is symptomatic presentation only
  • •M75.32: Shoulder pathology affects joint, not humeral bone
  • •S42.302A: Humeral fracture represents acute trauma
  • •M87.822: Other osteonecrosis lacks post-polio infectious etiology

Child Codes

M89.621Osteopathy after poliomyelitis, right upper arm
HCC 92
M89.622Osteopathy after poliomyelitis, left upper arm
HCC 92
M89.629Osteopathy after poliomyelitis, unspecified upper arm
HCC 92

Code Hierarchy

└M89Other disorders of bone└M89.6Osteopathy after poliomyelitis└M89.62Osteopathy after poliomyelitis, upper arm└M89.622Osteopathy after poliomyelitis, left upper arm
└M89.622Osteopathy after poliomyelitis, left upper arm

For M89.622, confirm that the documentation supports the diagnosis and meets the applicable coding, encounter, program and payer requirements. MEAT (Monitor, Evaluate, Assess, or Treat) is a review mnemonic, not a universal CMS coding rule.

M89.622 maps to CMS-HCC V28 category 92, Bone/Joint/Muscle/Severe Soft Tissue Infections/Necrosis. See the ICD-10 to HCC mapping hub for how the V28 crosswalk works. The mapping identifies a payment HCC category for M89.622. Review its source-labeled HCC coefficient above, check the RAF Calculator with complete member context for CMS-HCC V28 PY2026, and confirm the documentation the chart needs before the code is submitted. HCC Buddy shows no RAF score unless every required source and calculation check passes.

Work M89.622 in HCC Buddy

Open M89.622 in the Code Book for the full Index-to-Tabular path, MEAT checklist, and V28 HCC mapping, or in the Encoder to code from a keyword search. Pro includes 7 days to try everything, no card required.

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