What does ICD-10 code G90.5 mean?

ICD-10 code G90.5 is the standardized code used for complex regional pain syndrome i (crps i) in medical records and coding systems.

When is ICD-10 code G90.5 used?

Doctors, hospitals, and insurers may use ICD-10 code G90.5 when recording complex regional pain syndrome i (crps i) in a standardized format. This entry may also act as a broader category that points toward more specific child codes.

Does ICD-10 code G90.5 confirm a diagnosis?

No. A code helps standardize documentation and claims, but it should not be read as a substitute for a clinician's full assessment.

ICD10

ICD-10 Code G90.5: Complex regional pain syndrome I (CRPS I)

Name: ICD-10 Code G90.5: Complex regional pain syndrome I (CRPS I)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T06:07:18.964Z

G90.5 is an ICD-10 diagnosis entry used to group records related to Complex regional pain syndrome I (CRPS I). You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the nervous system (G00-G99).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. 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 complex regional pain syndrome i (crps i) in a patient's medical record.
May appear in hospital records, claims, referrals, and clinical documentation.
This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

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.
This entry may represent a broader category rather than the most specific billable code.

Code hierarchy

chapter

6Diseases of the nervous system (G00-G99)

block

G89-G99Other disorders of the nervous system

Official coding notes

Inclusion terms

Reflex sympathetic dystrophy

Excludes1 (do not code together)

causalgia of lower limb (G57.7-)
causalgia of upper limb (G56.4-)
complex regional pain syndrome II of lower limb (G57.7-)
complex regional pain syndrome II of upper limb (G56.4-)

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Related specialists

NeurologistGeneral Physician

Sibling codes

G90.0Idiopathic peripheral autonomic neuropathy G90.1Familial dysautonomia [Riley-Day]billable G90.2Horner's syndromebillable G90.3Multi-system degeneration of the autonomic nervous systembillable G90.4Autonomic dysreflexiabillable G90.8Other disorders of autonomic nervous system G90.9Disorder of the autonomic nervous system, unspecifiedbillable G90.APostural orthostatic tachycardia syndrome [POTS]billable G90.BLMNB1-related autosomal dominant leukodystrophybillable

Coding guidelines

Common synonyms

Complex regional pain syndrome I (CRPS I)Complex regional pain syndrome IComplex regional pain syndrome I CRPS I

Frequently asked questions

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.