G14 ICD-10-CM Code: Postpolio syndrome
G14 maps to CMS-HCC V28 182. A source-labeled RAF reference is available. Confirm the documented diagnosis and applicable coding requirements. MEAT criteria · RAF Calculator · free HCC coding tools
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FY 2026 Apr update / Diseases of the nervous system (G00-G99) / Systemic atrophies primarily affecting the central nervous system (G10-G14)
G14
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidancePostpolio syndrome
A late-onset condition affecting people who previously had polio, characterized by progressive muscle weakness, pain, and fatigue that develops years or decades after the initial infection.
Buddy Insight
Postpolio syndrome affects polio survivors years to decades after initial infection, causing new progressive muscle weakness, fatigue, and pain.
CMS-HCC V28
MappedHCC 182
Coefficient HCC 182: 0.478 (Community Non-Dual Aged (CNA))
CMS-HCC V24
HistoricalHistorical
Not used for CY2026 payment
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
OfficialNo inclusion terms are included in this display for G14. Check the code and parent instructions in the Code Book.
Excludes 2
Official- certain conditions originating in the perinatal period (P04-P96)Inherited from G00-G99
- certain infectious and parasitic diseases (A00-B99)Inherited from G00-G99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)Inherited from G00-G99
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Inherited from G00-G99
- endocrine, nutritional and metabolic diseases (E00-E88)Inherited from G00-G99
- injury, poisoning and certain other consequences of external causes (S00-T88)Inherited from G00-G99
- neoplasms (C00-D49)Inherited from G00-G99
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)Inherited from G00-G99
Related Codes
No related codes are included in this display for G14. Check the Code Book for the complete code path.
Includes
Official- postpolio myelitic syndrome
Excludes 1
Official- sequelae of poliomyelitis (B91)
Code First
OfficialNo Code First sequencing instructions are included in this display for G14. Check the code and parent instructions in the Code Book.
Use Additional
OfficialNo Use Additional Code instructions are included in this display for G14. Check the code and parent instructions in the Code Book.
Code Also
OfficialNo Code Also instructions are included in this display for G14. Check the code and parent instructions in the Code Book.
Buddy Documentation Tip
MEAT Support
Audit Caution
Common Mistakes
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 G14 an HCC code?
Yes. G14 (Postpolio syndrome) maps to HCC 182, Spinal Cord Disorders/Injuries under the CMS-HCC V28 risk adjustment model, with a source-labeled community non-dual aged reference coefficient of 0.478. 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: G14 is billable and maps to V28 HCC 182, Spinal Cord Disorders/Injuries. Open it in the Code Book for the tabular path, RAF, and MEAT checklist.
- Code
- G14
- Description
- Postpolio syndrome
- HCC (V28)
- HCC 182 — Spinal Cord Disorders/Injuries
- RAF reference coefficient
- 0.478
- Billable
- Yes
- Payment year
- 2026
HCC Category Mapping
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 G14 in the Code Book — tabular path, V28 RAF reference, and MEAT checklist →
MEAT review for G14
For G14, 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
G14 is the ICD-10-CM diagnosis code for postpolio syndrome. A late-onset condition affecting people who previously had polio, characterized by progressive muscle weakness, pain, and fatigue that develops years or decades after the initial infection. G14 sits in the ICD-10-CM chapter for diseases of the nervous system (g00-g99), within the section covering systemic atrophies primarily affecting the central nervous system (g10-g14).
Under the CMS-HCC V28 risk adjustment model, G14 maps to Spinal Cord Disorders/Injuries (HCC 182) with a source-labeled community, non-dual, aged reference coefficient of 0.478. 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.
Document the history of polio infection in the medical record. For G14, 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 G14 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Document the history of polio infection in the medical record
- •This code is used only for late manifestations, not for acute polio
Clinical Significance
Postpolio syndrome affects polio survivors years to decades after initial infection, causing new progressive muscle weakness, fatigue, and pain. With an estimated 300,000-400,000 postpolio survivors in the United States, this condition drives significant rehabilitation and pain management utilization and requires differentiation from other causes of weakness in aging patients.
Documentation Requirements
- ✓Documented history of prior poliomyelitis infection
- ✓New onset of progressive muscle weakness, fatigue, or pain years after initial infection
- ✓Typical latency period of 15-40 years between acute polio and new symptoms documented
- ✓Neurological examination confirming new weakness in previously affected or unaffected muscles
- ✓Exclusion of other causes of progressive weakness
- ✓Electromyography findings if performed showing chronic denervation with reinnervation
Includes
- postpolio myelitic syndrome
Excludes 1, Do NOT code together
- sequelae of poliomyelitis (B91)
Commonly Confused Codes
- •B91: Sequelae of poliomyelitis: for residual paralysis or deformity from acute polio, not new progressive symptoms
- •G12.29: Other motor neuron disease: postpolio syndrome is not classified as a primary motor neuron disease
- •M79.3: Panniculitis, unspecified: sometimes confused due to fatigue and pain overlap
- •G71.11: Myotonic muscular dystrophy: progressive weakness in adults but different etiology