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ICD-10-CM Code G90.3
Multi-system degeneration of the autonomic nervous system

Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
| ICD-10 from 2011 - 2016

G90.3 is a billable ICD code used to specify a diagnosis of multi-system degeneration of the autonomic nervous system. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

The ICD code G903 is used to code Multiple system atrophy

Multiple system atrophy (MSA) is a degenerative neurological disorder. MSA is associated with the degeneration of nerve cells in specific areas of the brain. This cell degeneration causes problems with movement, balance, and autonomic functions of the body such as bladder control or blood-pressure regulation. The cause of MSA is unclear and no specific risk factors have been identified, although research indicates that a prion form of the alpha-synuclein protein may be the cause of the disease.

Specialty: Neurology
MeSH Code: D019578
ICD 9 Code: 333.0

Alpha synuclein immunohistochemistry showing many glial inclusions

Source: Wikipedia

Coding Notes for G90.3 Info for medical coders on how to properly use this ICD-10 code

Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive.
Neurogenic orthostatic hypotension [Shy-Drager]
Code Type-1 Excludes:
Type-1 Excludes
Type-1 Excludes mean the conditions excluded are mutually exclusive and should never be coded together. Excludes 1 means "do not code here."
Orthostatic hypotension NOS - instead, use code I95.1

MS-DRG Mapping

  • DRG Group #056-057 - Degenerative nervous system disorders with MCC.
  • DRG Group #056-057 - Degenerative nervous system disorders without MCC.

Related Concepts SNOMET-CT

  • Pure autonomic failure (disorder)
  • Sympathotonic orthostatic hypotension (disorder)

ICD-10-CM Alphabetical Index References for 'G90.3 - Multi-system degeneration of the autonomic nervous system'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code G90.3. Click on any term below to browse the alphabetical index.


Other degenerative diseases of the basal ganglia (approximate match)

This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code G90.3 and a single ICD9 code, 333.0 is an approximate match for comparison and conversion purposes.

Parent Code: G90 - Disorders of autonomic nervous system

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/G903