G90.1
G90.1: Familial dysautonomia [Riley-Day]
Billable / specific codeICD-10-CM
G90.1 is a billable, specific ICD-10-CM code for familial dysautonomia [riley-day]. It is valid for submission on a claim.
Check G90.1 with the rest of the claim: free scrubberOther codes that can never be billed with G90.1
Their own Excludes1 notes name this code, so the conflict is not listed above.
- Q85Phakomatoses, not elsewhere classified
Risk adjustment
G90.1 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 182 Spinal Cord Disorders/Injuries0.478 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score. Look up the whole chart to see which of its HCCs the hierarchy would zero.
Medicare coverage
G90.1 is named in 5 Medicare coverage policies: 5 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A54111Billing and Coding: Speech Language Pathology (SLP) Services: Communication Disorders
- A56612Billing and Coding: CT of the Head
- A56619Billing and Coding: Nerve Conduction Studies and Electromyography
- A57204Billing and Coding: MRI and CT Scans of the Head and Neck
Alphabetic index entries that lead here
- Dysautonomia(familial)
- Riley-Day syndrome
Code history
Unchanged in every release from FY2024 to FY2027.
Other codes under G90
- G90.0Idiopathic peripheral autonomic neuropathy
- G90.2Horner's syndrome
- G90.3Multi-system degeneration of the autonomic nervous system
- G90.4Autonomic dysreflexia
- G90.5Complex regional pain syndrome I (CRPS I)
- G90.8Other disorders of autonomic nervous system
- G90.9Disorder of the autonomic nervous system, unspecified
- G90.APostural orthostatic tachycardia syndrome [POTS]
- G90.BLMNB1-related autosomal dominant leukodystrophy