G03.0 ICD-10-CM Code: Nonpyogenic meningitis
G03.0 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC Buddy coding tools
HCC Buddy Code Card
Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.
FY 2026 Apr update / Diseases of the nervous system (G00-G99) / Inflammatory diseases of the central nervous system (G00-G09)
G03.0
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceNonpyogenic meningitis
Inflammation of the membranes surrounding the brain and spinal cord that is not caused by pus-forming (pyogenic) bacteria, often viral or aseptic in nature.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
HistoricalHistorical
Not used for CY2026 payment
ACA/HHS
MappedHCC 004
Code-level coefficient reference
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
Official- Aseptic meningitis
- Nonbacterial meningitis
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
Includes
Official- arachnoiditis NOSInherited from G03
- leptomeningitis NOSInherited from G03
- meningitis NOSInherited from G03
- pachymeningitis NOSInherited from G03
Excludes 1
Official- meningoencephalitis (G04.-)Inherited from G03
- meningomyelitis (G04.-)Inherited from G03
Code First
OfficialNo Code First sequencing instructions are included in this display for G03.0. Check the code and parent instructions in the Code Book.
Use Additional
OfficialNo Use Additional Code instructions are included in this display for G03.0. Check the code and parent instructions in the Code Book.
Code Also
OfficialNo Code Also instructions are included in this display for G03.0. Check the code and parent instructions in the Code Book.
Buddy Documentation Tip
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 G03.0 an HCC code?
G03.0 is not in the CMS-HCC V28 or V24 community payment model. G03.0 also appears in the HHS-HCC commercial risk model (HCC 004 (HHS-HCC 004 adult, RAF varies by metal level)), which is a commercial market model rather than a Medicare Advantage payment mapping.
- Code
- G03.0
- Description
- Nonpyogenic meningitis
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF reference coefficient
- —
- Billable
- Yes
- Payment year
- 2026
Coder workflow notes
Get the V28 mapping + MEAT cheat sheet
One printable reference: check representative V28 mappings and the documentation reminders your note needs. Free, no card.
Free PDF. No card. Unsubscribe anytime.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
G03.0 is the ICD-10-CM diagnosis code for nonpyogenic meningitis. Inflammation of the membranes surrounding the brain and spinal cord that is not caused by pus-forming (pyogenic) bacteria, often viral or aseptic in nature. G03.0 sits in the ICD-10-CM chapter for diseases of the nervous system (g00-g99), within the section covering inflammatory diseases of the central nervous system (g00-g09).
G03.0 has no mapping under the CMS-HCC V28 or V24 community payment models. G03.0 also appears in the HHS-HCC commercial risk model (HCC 004 (HHS-HCC 004 adult, RAF varies by metal level)), which is a commercial market model rather than a Medicare Advantage payment mapping. Do not assign V28 risk adjustment value from this page; verify the applicable model and payment year before using this code for risk adjustment.
Distinguish between nonpyogenic (aseptic) meningitis and bacterial meningitis based on CSF findings and culture results.
HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for G03.0 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Distinguish between nonpyogenic (aseptic) meningitis and bacterial meningitis based on CSF findings and culture results
- •Document the suspected or confirmed causative agent (viral, fungal, etc.) when available