ICD-10-CM 2027
ICD-10 code for sympathetic paralysis
From the official ICD-10-CM alphabetic index entry “Paralysis, paralytic (complete) (incomplete) › sympathetic”. Page updated September 29, 2026.
About coding sympathetic paralysis
The ICD-10-CM code for sympathetic paralysis is G90.89 (Other disorders of autonomic nervous system). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on G90.89.
Within G90.8, choose G90.89 (Other disorders of autonomic nervous system) only when documentation doesn't support a more specific option: serotonin syndrome (G90.81).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 073 (Cranial and Peripheral Nerve Disorders with MCC, relative weight 1.5779) and DRG 074 (Cranial and Peripheral Nerve Disorders without MCC, relative weight 1.0173), in MDC 01 (Diseases and Disorders of the Nervous System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific sympathetic paralysis codes (official index)
- cervical G90.09 — Other idiopathic peripheral autonomic neuropathy
- nervous system
Common questions about sympathetic paralysis ICD-10 codes
What is the ICD-10 code for sympathetic paralysis?
- G90.89 — Other disorders of autonomic nervous system. More specific codes apply when the documentation supports them: G90.09.
What is the ICD-10 code for cervical sympathetic paralysis?
- G90.09 — Other idiopathic peripheral autonomic neuropathy.
Is G90.89 billable?
- Yes. G90.89 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can G90.89 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict G90.89 as a principal diagnosis.
Is G90.89 a CC or MCC?
- No. G90.89 is neither a CC nor an MCC under MS-DRG v44.0.