ICD-10 G02
Billable / Specific MCCMeningitis in other infectious and parasitic diseases classified elsewhere
About ICD-10-CM G02
ICD-10-CM code G02 represents Meningitis in other infectious and parasitic diseases classified elsewhere. This is a billable/specific code in the Nervous System chapter (block G02). The 2026 edition of ICD-10-CM G02 became effective on October 1, 2025.
Coding Tips for G02
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
G02 is designated MCC for MS-DRG grouping. On inpatient claims, this code can shift the DRG to the with-MCC variant when documented as a present-on-admission secondary diagnosis. Hospital CDI programs flag MCC opportunities during chart review. Failure to capture this code may leave 30 to 80 percent of the inpatient stay revenue unrealized.
Type 1 Excludes
Pure excludes, these codes can never be coded together with G02. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- candidal meningitis (B37.5)
- coccidioidomycosis meningitis (B38.4)
- cryptococcal meningitis (B45.1)
- herpesviral [herpes simplex] meningitis (B00.3)
- infectious mononucleosis complicated by meningitis (B27.- with fifth character 2)
- measles complicated by meningitis (B05.1)
- meningoencephalitis and meningomyelitis in other infectious and parasitic diseases classified elsewhere (G05)
- mumps meningitis (B26.1)
- rubella meningitis (B06.02)
- varicella [chickenpox] meningitis (B01.0)
- zoster meningitis (B02.1)
Coding Notes
Code First
- underlying disease, such as:
- African trypanosomiasis (B56.-)
- poliovirus infection (A80.-)
Inpatient DRG Impact, MCC
codes Meningitis in other infectious and parasitic diseases classified elsewhere. As a Major Complication/Comorbidity (MCC), this can shift the DRG assignment to a higher-weighted category, substantial reimbursement impact.
Medicare LCD Coverage for G02
Local Coverage Determinations (LCDs) from CMS MACs that list G02 as a covered diagnosis.
Showing top 10 of 51 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing G02.
5 Medicare
CPT Codes Commonly Billed with G02
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert G02 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| G02 | 3211 | 10000 |
| G02 | 3212 | 10000 |
| G02 | 3218 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To G02
Other codes in section G00-G09 (Inflammatory diseases of the central nervous system).
ICD-10 G02, Billing FAQ
Is ICD-10 code G02 billable? +
Yes, G02 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What codes are Type 1 Excludes for G02? +
Type 1 Excludes (never code together with G02): candidal meningitis (B37.5); coccidioidomycosis meningitis (B38.4); cryptococcal meningitis (B45.1)
Is G02 a CC or MCC for inpatient DRG? +
Yes, this code is designated as MCC. Documenting as a secondary diagnosis on inpatient claims can shift the DRG to a higher-weighted category.
What ICD-9 codes does G02 map to? +
Per CMS GEMs, G02 maps to ICD-9 codes: 3211, 3212, 3218. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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