G62.82 ICD-10-CM Code: Radiation-induced polyneuropathy
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FY 2026 Apr update / Diseases of the nervous system (G00-G99) / Polyneuropathies and other disorders of the peripheral nervous system (G60-G65)
G62.82
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceRadiation-induced polyneuropathy
Nerve damage affecting multiple nerves caused by radiation therapy or radiation exposure during cancer treatment or other medical procedures.
Buddy Insight
Radiation-induced polyneuropathy is a complication of radiation therapy that indicates nerve damage from cancer treatment, reflecting a patient with both a malignancy history and treatment-related complications.
CMS-HCC V28
00
RAF 0
CMS-HCC V24
MappedHCC 75
RAF 0.425
ACA/HHS
00
RAF 0
ESRD/PACE
MappedHCC 75
RAF 0.0
RXHCC
MappedHCC 158
RAF 0.0
Code Trumping
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Code Book Path
Inclusion Terms
OfficialICD-10-CM does not list inclusion terms for G62.82 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for G62.82 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for G62.82 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for G62.82 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for G62.82 in this effective period.
Use Additional
Official- external cause code (W88-W90, X39.0-) to identify cause
Code Also
OfficialICD-10-CM does not list Code Also instructions for G62.82 in this effective period.
Buddy Documentation Tip
MEAT Support
Audit Caution
Common Mistakes
Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.
Is G62.82 an HCC code?
Yes. G62.82 maps to Myasthenia Gravis/Myoneural Conditions and Guillain-Barre Syndrome under the V24 model but is not retained in V28.
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 G62.82
For G62.82to 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 G62.82 during that encounter, not just copy-forwarded from a problem list.
Coder workflow notes
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What This Code Means
G62.82 is the ICD-10-CM diagnosis code for radiation-induced polyneuropathy. Nerve damage affecting multiple nerves caused by radiation therapy or radiation exposure during cancer treatment or other medical procedures. G62.82 sits in the ICD-10-CM chapter for diseases of the nervous system (g00-g99), within the section covering polyneuropathies and other disorders of the peripheral nervous system (g60-g65).
Under the older CMS-HCC V24 model, G62.82 maps to Myasthenia Gravis/Myoneural Conditions and Guillain-Barre Syndrome (HCC 75) with a community, non-dual, aged base RAF weight of 0.425. 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.
Link this code to the radiation therapy procedure code and the condition being treated. Because G62.82 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 G62.82 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Link this code to the radiation therapy procedure code and the condition being treated
- •Document the type and dose of radiation when available to support medical necessity
Clinical Significance
Radiation-induced polyneuropathy is a complication of radiation therapy that indicates nerve damage from cancer treatment, reflecting a patient with both a malignancy history and treatment-related complications. Capturing this diagnosis is important for reflecting the full complexity of cancer survivors and their ongoing neurological management needs.
Documentation Requirements
- ✓History of radiation therapy with dates and treatment fields
- ✓Clinical findings of polyneuropathy in the irradiated region
- ✓Temporal relationship between radiation exposure and neuropathy onset
- ✓Nerve conduction studies or electromyography results when available
- ✓The underlying malignancy or condition for which radiation was administered
- ✓Provider's explicit causal statement linking radiation to the polyneuropathy
Commonly Confused Codes
- •G62.0: Drug-induced polyneuropathy is for chemotherapy-induced neuropathy, not radiation-induced
- •G62.2: Polyneuropathy due to other toxic agents covers non-radiation toxic exposures
- •G89.0: Central pain syndrome can develop after radiation but involves a different mechanism
- •G62.9: Polyneuropathy, unspecified should not be used when radiation etiology is documented