ICD10BillableValid for clinical use

ICD-10 Code G90.4: Autonomic dysreflexia

G90.4 is a billable ICD-10 diagnosis code used to classify Autonomic dysreflexia in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the nervous system (G00-G99).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the nervous system (G00-G99).

When is it used?

  • May be used when a clinician documents autonomic dysreflexia in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
6Diseases of the nervous system (G00-G99)
block
G89-G99Other disorders of the nervous system
category
G90Disorders of autonomic nervous system
currentG90

Official coding notes

Applicable to
  • code to identify the cause, such as:
  • fecal impaction (K56.41)
  • pressure ulcer (pressure area) (L89.-)
  • urinary tract infection (N39.0)
Use additional code
  • code to identify the cause, such as:
  • fecal impaction (K56.41)
  • pressure ulcer (pressure area) (L89.-)
  • urinary tract infection (N39.0)

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

NeurologistGeneral Physician

Coding guidelines

Compatibility

Legacy and official ICD code match exactly.
Legacy codes
G90.4

Common synonyms

Autonomic dysreflexia

Frequently asked questions

Code details

CodeG90.4
SystemICD10
Display nameAutonomic dysreflexia
ChapterDiseases of the nervous system (G00-G99)
BlockOther disorders of the nervous system

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Dysreflexia, autonomic

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code G90.4 for Autonomic dysreflexia | HealthAssure