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v1.0.0
ICD-10 Guide
DiagnosesAutonomic Dysfunction

Autonomic Dysfunction

ICD-10 Coding for Autonomic Dysfunction(G90.0, G90.A, E11.43)

PRIMARY SPECIALTYCardiology
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Autonomic Dysfunction?
Essential facts and insights about Autonomic Dysfunction

Key Clinical Considerations:

  • Orthostatic hypotension
  • Palpitations
  • Dizziness or lightheadedness
  • Fatigue
  • Sweating abnormalities

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history of symptoms related to autonomic dysfunction
  • Results of tilt table tests or autonomic function tests
  • Detailed physical exam notes including vital signs and neurological assessment

Coding Guidelines

Usage Guidelines & Examples

  • Ensure correct use of G90.9 for unspecified autonomic dysfunction versus specific codes for related conditions.
  • Common errors include misclassifying symptoms as primary diagnoses.

Code Exclusions

Important Exclusions

  • Excludes conditions such as diabetes-related autonomic neuropathy (E08.43, E09.43)
  • Alternative codes may include I95.2 for other forms of hypotension

Related ICD-10 Codes

Primary Codes
G90.9
Disorder of autonomic nervous system, unspecified
I95.1
Orthostatic hypotension
Differential Codes
E11.43
E11.43
if diabetes is the underlying cause.
I95.1
I95.1
if hypotension is present.

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Cardiology

Specialty Applications

  • Patients with known cardiovascular diseases
  • Patients presenting with unexplained syncope or dizziness

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

Documentation requirements?

Include detailed patient history, symptom duration, and results of diagnostic tests.

Billing considerations?

Ensure accurate coding to reflect the complexity of the condition and associated symptoms.