Specific code 2013 ICD-9-CM Diagnosis Code 341.21
Acute (transverse) myelitis in conditions classified elsewhere
  • Short description: Acute myelitis oth cond.
  • ICD-9-CM 341.21 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 341.21 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
  • You are viewing the 2013 version of ICD-9-CM 341.21.
  • More recent version(s) of ICD-9-CM 341.21: 2014 2015.
Convert to ICD-10-CM: 341.21 converts approximately to:
  • 2015/16 ICD-10-CM G37.3 Acute transverse myelitis in demyelinating disease of central nervous system
Approximate Synonyms
  • Acute non-infective transverse myelitis
  • Acute transverse myelitis in demyelinating CNS disease
Code First
  • Code firstunderlying condition
ICD-9-CM Volume 2 Index entries containing back-references to 341.21:
  • Myelitis (ascending) (cerebellar) (childhood) (chronic) (descending) (diffuse) (disseminated) (pressure) (progressive) (spinal cord) (subacute) (see also Encephalitis) 323.9
    • acute (transverse) 341.20
      • idiopathic 341.22
      • in conditions classified elsewhere 341.21
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 341.21 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2013 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.