G01 diagnosis code · Billable category · FY2027

G01 Meningitis in bacterial diseases classified elsewhere

G01 ICD-10 code: a billable diagnosis code in FY2027; the category has no subdivisions.

Where it sits

Instructions

meningitis (in):
gonococcal (A54.81) A54.81
leptospirosis (A27.81) A27.81
listeriosis (A32.11) A32.11
Lyme disease (A69.21) A69.21
meningococcal (A39.0) A39.0
neurosyphilis (A52.13) A52.13
tuberculosis (A17.0) A17.0
meningoencephalitis and meningomyelitis in bacterial diseases classified elsewhere (G05) G05

Chapter 6 instructions (Excludes2 8): printed on the chapter 6 page.

Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic)in (due to)bacterial disease NEC → A48.8 [G01]

CMS files for G01
CC / MCC	MCC
PDX exclusion list	0220 (106 codes)
Appendix B	MDC 01 Diseases and Disorders of the Nervous System, MS-DRG 023-024 (Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis with MCC or Antineoplastic Implant or Epilepsy with Neurostimulator…); MDC 01 Diseases and Disorders of the Nervous System, MS-DRG 094-096 (Bacterial and Tuberculous Infections of Nervous System with MCC…); MDC 15 Newborns and Other Neonates with Conditions Originating in Perinatal Period, MS-DRG 791 (Prematurity with Major Problems…); MDC 15 Newborns and Other Neonates with Conditions Originating in Perinatal Period, MS-DRG 793 (Full Term Neonate with Major Problems…)
Code Editor	Manifestation code: not allowed as principal diagnosis
POA	Reported
HCC V28	–

MCC as a secondary diagnosis, not when the principal diagnosis is on its PDX exclusion list.