G89.4 Chronic pain syndrome

The ICD-10-CM code for Chronic pain syndrome is G89.4 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

6: Diseases of the nervous system (G00-G99)

Section

G89-G99: Other disorders of the nervous system (G89-G99)

Category G89

13 codes (10 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to G89.4:

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

Inclusion Terms

• Chronic pain associated with significant psychosocial dysfunction

U.S. Hospital Utilization

• An estimated 396,730 U.S. inpatient stays in 2023 included G89.4 among the documented diagnoses.
• 1,520 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Chronic pain syndrome vs chronic pain; use G89.0/G89.4 only if documented

Central pain syndrome (G89.0) and chronic pain syndrome (G89.4) are different than the term “chronic pain,” and therefore codes should only be used when the provider has specifically documented this condition. See Section I.C.5. Pain disorders related to psychological factors

Dominant/nondominant side (TOC entry)

a. Dominant/nondominant side ................................................................................................. 45

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)