Short answer · Medically reviewed summary · Last updated: 2026-04-06
Postural Orthostatic Tachycardia Syndrome (POTS), a primary form of Dysautonomia, is classified under ICD-10 code G90.9 (Disorder of the autonomic nervous system, unspecified) or sometimes G90.8, while under the older ICD-9 system, it was typically coded as 785.0 (Tachycardia, unspecified) or 337.9 (Unspecified disorder of the autonomic nervous system). Understanding Diagnostic Coding Because Dysautonomia and POTS are complex, multisystem conditions, there is no single, dedicated ICD-10 code that exclusively represents the syndrome. Clinicians often use G90.9 to capture the broad autonomic dysfunction, while also coding for associated symptoms like orthostatic intolerance (I95.1).
5 people with Dysautonomia / POTS have shared their first-person experience on this question at DiseaseMaps.
ICD10 code of Dysautonomia / POTS and ICD9 code
ICD-10 and ICD-9 codes for Dysautonomia / POTS, with classification details for clinicians, coders and patients.
Postural Orthostatic Tachycardia Syndrome (POTS), a primary form of Dysautonomia, is classified under ICD-10 code G90.9 (Disorder of the autonomic nervous system, unspecified) or sometimes G90.8, while under the older ICD-9 system, it was typically coded as 785.0 (Tachycardia, unspecified) or 337.9 (Unspecified disorder of the autonomic nervous system).
Understanding Diagnostic Coding
Because Dysautonomia and POTS are complex, multisystem conditions, there is no single, dedicated ICD-10 code that exclusively represents the syndrome. Clinicians often use G90.9 to capture the broad autonomic dysfunction, while also coding for associated symptoms like orthostatic intolerance (I95.1). The lack of a unique, disease-specific code can sometimes be frustrating for patients navigating insurance and disability claims, as it may not fully capture the clinical severity or the multisystem nature of POTS.
Clinical Implications of Coding
As a specialist physician, I recognize that these codes often feel inadequate for those living with the daily challenges of Dysautonomia. While the codes are essential for administrative and billing purposes, they rarely reflect the profound impact that autonomic instability has on your quality of life, cognitive function, and physical stamina. When discussing your diagnosis with healthcare providers, focus on the clinical documentation of your "tilt table test" results and heart rate variability, as these objective markers are often more clinically significant for your care plan than the diagnostic code itself. We understand that the journey to receiving an accurate diagnosis for POTS is often long, and the ambiguity of coding can sometimes add to the burden of your experience.
Medical Disclaimer: This information is for educational purposes and does not constitute medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.
References
- NIH Genetic and Rare Diseases Information Center (GARD) - Postural Orthostatic Tachycardia Syndrome
- Dysautonomia International - Clinical Resources and Coding Information
- Orphanet - Rare Disease Database (ORPHA: 2603)
Posted Aug 17, 2017 by Miranda 2150
ICD 9- 337.9
Posted Sep 28, 2017 by Lbond94 4100
Posted Jun 2, 2017 by Aurora Saez 3201
Posted Jul 7, 2017 by Ana 2050
Posted Sep 10, 2017 by Annie 2050
