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ICD-10-CM 2027

ICD-10 code for Meningoencephalomyelitis

Choose a code from the options below based on the documentation.

From the official ICD-10-CM alphabetic index entry “Meningoencephalomyelitis”. Page updated September 29, 2026.

About coding Meningoencephalomyelitis

The official ICD-10-CM index doesn't give a single default code for meningoencephalomyelitis; the code depends on the details below.

More specific Meningoencephalomyelitis codes (official index)

  • acute NEC (viral) A86 — Unspecified viral encephalitis
  • disseminated G04.00 — Acute disseminated encephalitis and encephalomyelitis, unspecified
  • postimmunization or postvaccination G04.02 — Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis
  • postinfectious G04.01 — Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)
  • due to
  • actinomycosis A42.82 — Actinomycotic encephalitis
  • Torula B45.1 — Cerebral cryptococcosis
  • Toxoplasma or toxoplasmosis (acquired) B58.2 — Toxoplasma meningoencephalitis
  • congenital P37.1 — Congenital toxoplasmosis
  • postimmunization or postvaccination G04.02 — Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis

Common questions about Meningoencephalomyelitis ICD-10 codes

What is the ICD-10 code for acute nec meningoencephalomyelitis?

A86 — Unspecified viral encephalitis.

What is the ICD-10 code for postimmunization or postvaccination meningoencephalomyelitis?

G04.02 — Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis.