2026 ICD-10-CM Diagnosis Code G89.4Chronic pain syndrome

ICD-10-CM Codes›G00–G99›G89-G99›G89

ICD-10-CM G89.4
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G89.4 is a billable ICD-10-CM diagnosis code for chronic pain syndrome. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as chronic idiopathic pain syndrome. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Nervous system pain and pain syndromes.

Code Identity

ICD-10-CM Code
G89.4
Billable Status
Yes — Valid for Submission
Code Describes
Chronic pain syndrome
Short Description
Chronic pain syndrome
Same as the full description in the CMS dataset.
Parent Code
G89
Pain, not elsewhere classified

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG89-G99Other disorders of the nervous system
CategoryG89Pain, not elsewhere classified
This CodeG89.4Chronic pain syndrome

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Chronic idiopathic pain syndrome
  • Chronic pain syndrome

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Chronic pain associated with significant psychosocial dysfunction

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Pain(s)
      • chronic
        • associated with significant psychosocial dysfunction
    • Syndrome
      • chronic
        • pain

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR NVS019
Nervous system pain and pain syndromes
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Chronic Pain

Pain is a signal from your nervous system that something may be wrong. It is an unpleasant feeling, such as a prick, tingle, sting, burn, or ache. Pain may be sharp or dull. You may feel pain in one area of your body or all over. Each person feels pain differently, even if the reason for the pain is the same.

The full article covers:

  • What is chronic pain?
  • What causes chronic pain?
  • What are the symptoms of chronic pain?
  • Who is more likely to get chronic pain?
  • How is chronic pain diagnosed?
  • What are the treatments for chronic pain?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert G89.4 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
338.4 Chronic pain syndrome
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About G89.4Overview

Is G89.4 (Pain, not elsewhere classified) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report chronic pain syndrome on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of G89.4?

Under the General Equivalence Mappings, chronic pain syndrome converts to ICD-9-CM 338.4 (chronic pain syndrome). The mapping is a direct match.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.