ICD-10 G35.D
Billable / Specific HCC v28: 77Multiple sclerosis, unspecified
About ICD-10-CM G35.D
ICD-10-CM code G35.D represents Multiple sclerosis, unspecified. This is a billable/specific code in the Nervous System chapter (block G35). The 2026 edition of ICD-10-CM G35.D became effective on October 1, 2025.
Coding Tips for G35.D
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
G35.D is a CMS-HCC v28 risk-adjustment code (category 77). To count for the patient Risk Adjustment Factor (RAF), document the diagnosis with MEAT language each calendar year: Monitored, Evaluated, Assessed, Treated. A diagnosis on the problem list alone does not satisfy CMS RADV audit standards. Include the diagnosis in the assessment with current status and current treatment plan.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under G35.D. Per CMS ICD-10-CM Tabular 2026.
- Disseminated multiple sclerosis
- Generalized multiple sclerosis
- Multiple sclerosis NOS
- Multiple sclerosis of brain stem
- Multiple sclerosis of cord
Medicare Advantage HCC Impact
Capture this diagnosis annually for accurate risk adjustment. Missed HCC captures are the #1 revenue leak in Medicare Advantage risk programs.
Medicare LCD Coverage for G35.D
Local Coverage Determinations (LCDs) from CMS MACs that list G35.D as a covered diagnosis.
Showing top 10 of 560 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing G35.D.
1 Aetna
4 Cigna
5 Medicare
Codes Adjacent To G35.D
Other codes in section G35-G37 (Demyelinating diseases of the central nervous system).
ICD-10 G35.D, Billing FAQ
Is ICD-10 code G35.D billable? +
Yes, G35.D is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to G35.D? +
ICD-10 G35.D includes: Disseminated multiple sclerosis; Generalized multiple sclerosis; Multiple sclerosis NOS, and 2 more clinical synonyms.
Does G35.D affect Medicare Advantage HCC risk adjustment? +
Yes. G35.D maps to CMS-HCC v28 category 77. Capture this diagnosis annually for accurate Medicare Advantage risk score.
What CPT codes are commonly billed with G35.D? +
Procedures frequently paired with G35.D include: 31570, 31573.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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