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

ICD-10-CM Diagnosis Code (2025)

Official Description for G05

Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere

Coding Notes & Guidelines for G05

Excludes1: Not Coded Here
  • 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)
Code First

underlying disease

Inclusion Terms

Meningoencephalitis in diseases classified elsewhere

Inclusion Terms

Meningomyelitis in diseases classified elsewhere

Child Codes (More Specific Codes for G05):

G05.3 - Encephalitis and encephalomyelitis in diseases classified elsewhere G05.4 - Myelitis in diseases classified elsewhere

About ICD-10-CM Code G05 (Encephalitis)

ICD-10-CM code G05 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM G05 became effective on October 1, 2024.

This page provides detailed information about G05 - Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Encephalitis related to myelitis and encephalomyelitis in diseases classified elsewhere.