G05 ICD-10-CM Code: Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere

G05 is the FY 2027 U.S. ICD-10-CM code for “Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere.”

No. G05 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

G05 is listed in Chapter 6, Diseases of the nervous system (G00-G99), within Inflammatory diseases of the central nervous system (G00-G09) (G00–G09), under category G05, Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere.

No inclusion terms are listed for G05 in this reference record. Code-first instructions: underlying disease, such as:; congenital toxoplasmosis encephalitis, myelitis and encephalomyelitis (P37.1); cytomegaloviral encephalitis, myelitis and encephalomyelitis (B25.8); encephalitis, myelitis and encephalomyelitis (in) systemic lupus erythematosus (M32.19); eosinophilic meningoencephalitis (B83.2); human immunodeficiency virus [HIV] disease (B20); poliovirus (A80.-); suppurative otitis media (H66.01-H66.4); systemic lupus erythematosus (M32.19); trichinellosis (B75). Excludes1 notes: adenoviral encephalitis, myelitis and encephalomyelitis (A85.1); encephalitis, myelitis and encephalomyelitis (in) measles (B05.0); enteroviral encephalitis, myelitis and encephalomyelitis (A85.0); herpesviral [herpes simplex] encephalitis, myelitis and encephalomyelitis (B00.4); listerial encephalitis, myelitis and encephalomyelitis (A32.12); meningococcal encephalitis, myelitis and encephalomyelitis (A39.81); mumps encephalitis, myelitis and encephalomyelitis (B26.2); postchickenpox encephalitis, myelitis and encephalomyelitis (B01.1-); rubella encephalitis, myelitis and encephalomyelitis (B06.01); toxoplasmosis encephalitis, myelitis and encephalomyelitis (B58.2); zoster encephalitis, myelitis and encephalomyelitis (B02.0). No Excludes2 note is listed.