Myelitis (acute) (ascending) (childhood) (chronic) (descending) (diffuse) (disseminated) (idiopathic) (pressure) (progressive) (spinal cord) (subacute) G04.91

- see also Encephalitis

ICD-10-CM Diagnosis Code G04.91

Myelitis, unspecified

2016 2017 2018 Billable/Specific Code

• herpes simplex B00.82
  ICD-10-CM Diagnosis Code B00.82

  Herpes simplex myelitis

  2016 2017 2018 Billable/Specific Code
• herpes zoster B02.24
  ICD-10-CM Diagnosis Code B02.24

  Postherpetic myelitis

  2016 2017 2018 Billable/Specific Code

  Applicable To

  • Herpes zoster myelitis
• in diseases classified elsewhere G05.4
  ICD-10-CM Diagnosis Code G05.4

  Myelitis in diseases classified elsewhere

  2016 2017 2018 Billable/Specific Code Manifestation Code

  Applicable To

  • Meningomyelitis in diseases classified elsewhere
• necrotizing, subacute G37.4
  ICD-10-CM Diagnosis Code G37.4

  Subacute necrotizing myelitis of central nervous system

  2016 2017 2018 Billable/Specific Code
• optic neuritis in G36.0
  ICD-10-CM Diagnosis Code G36.0

  Neuromyelitis optica [Devic]

  2016 2017 2018 Billable/Specific Code

  Applicable To

  • Demyelination in optic neuritis

  Type 1 Excludes

  • optic neuritis NOS (H46)
• postchickenpox B01.12
  ICD-10-CM Diagnosis Code B01.12

  Varicella myelitis

  2016 2017 2018 Billable/Specific Code

  Applicable To

  • Postchickenpox myelitis
• postherpetic B02.24
  ICD-10-CM Diagnosis Code B02.24

  Postherpetic myelitis

  2016 2017 2018 Billable/Specific Code

  Applicable To

  • Herpes zoster myelitis
• postimmunization G04.02
  ICD-10-CM Diagnosis Code G04.02

  Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis

  2016 2017 2018 Billable/Specific Code

  Applicable To

  • Encephalitis, post immunization
  • Encephalomyelitis, post immunization

  Use Additional

  • code to identify the vaccine (T50.A-, T50.B-, T50.Z-)
• postinfectious NEC G04.89
  ICD-10-CM Diagnosis Code G04.89

  Other myelitis

  2016 2017 2018 Billable/Specific Code
• postvaccinal G04.02
  ICD-10-CM Diagnosis Code G04.02

  Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis

  2016 2017 2018 Billable/Specific Code

  Applicable To

  • Encephalitis, post immunization
  • Encephalomyelitis, post immunization

  Use Additional

  • code to identify the vaccine (T50.A-, T50.B-, T50.Z-)
• specified NEC G04.89
  ICD-10-CM Diagnosis Code G04.89

  Other myelitis

  2016 2017 2018 Billable/Specific Code
• syphilitic A52.14
  (transverse)
  ICD-10-CM Diagnosis Code A52.14

  Late syphilitic encephalitis

  2016 2017 2018 Billable/Specific Code
• toxic G92
  ICD-10-CM Diagnosis Code G92

  Toxic encephalopathy

  2016 2017 2018 Billable/Specific Code

  Applicable To

  • Toxic encephalitis
  • Toxic metabolic encephalopathy

  Code First

  • , if applicable, drug induced (T36-T50)
  • (T51-T65) to identify toxic agent
• transverse G37.3
  (in demyelinating diseases of central nervous system)
  ICD-10-CM Diagnosis Code G37.3

  Acute transverse myelitis in demyelinating disease of central nervous system

  2016 2017 2018 Billable/Specific Code

  Applicable To

  • Acute transverse myelitis NOS
  • Acute transverse myelopathy

  Type 1 Excludes

  • multiple sclerosis (G35)
  • neuromyelitis optica [Devic] (G36.0)
• tuberculous A17.82
  ICD-10-CM Diagnosis Code A17.82

  Tuberculous meningoencephalitis

  2016 2017 2018 Billable/Specific Code

  Applicable To

  • Tuberculous myelitis
• varicella B01.12
  ICD-10-CM Diagnosis Code B01.12

  Varicella myelitis

  2016 2017 2018 Billable/Specific Code

  Applicable To

  • Postchickenpox myelitis