2026 ICD-10-CM Diagnosis Code G89.21Chronic pain due to trauma

ICD-10-CM Codes›G00–G99›G89-G99›G89

ICD-10-CM G89.21
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G89.21 is a billable ICD-10-CM diagnosis code for chronic pain due to trauma. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as chronic pain due to injury. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Nervous system pain and pain syndromes.

Code Identity

ICD-10-CM Code
G89.21
Billable Status
Yes — Valid for Submission
Code Describes
Chronic pain due to trauma
Short Description
Chronic pain due to trauma
Same as the full description in the CMS dataset.
Parent Code
G89.2
Chronic pain, not elsewhere classified

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG89-G99Other disorders of the nervous system
CategoryG89Pain, not elsewhere classified
This CodeG89.21Chronic pain due to trauma

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Chronic pain due to injury
  • Chronic pain following burn injury
  • Chronic pain following musculoskeletal injury
  • Chronic pain following trauma
  • Chronic pain following whiplash injury to neck
  • Pain provoked by trauma

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
        • due to trauma

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 G89.21 to ICD-9-CMHistory

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

ICD-9-CM
338.21 Chronc pain d/t trauma
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 G89.21Overview

Is G89.21 (Chronic pain, not elsewhere classified) a billable code?

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

What is the ICD-9 equivalent of G89.21?

Under the General Equivalence Mappings, chronic pain due to trauma converts to ICD-9-CM 338.21 (chronc pain d/t trauma). 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.