G05

Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere

Header / non-billable

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Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · G05
Excludes 1

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)

Code first

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)

Inherited from chapter 6Diseases of the nervous system
Excludes 2

certain conditions originating in the perinatal period (P04-P96) certain infectious and parasitic diseases (A00-B99) complications of pregnancy, childbirth and the puerperium (O00-O9A) congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) endocrine, nutritional and metabolic diseases (E00-E88) injury, poisoning and certain other consequences of external causes (S00-T88) neoplasms (C00-D49) symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Official Guidelines for G05

FY 2026 ›