G47.2 Circadian rhythm sleep disorders

The ICD-10-CM code for Circadian rhythm sleep disorders is G47.2 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Chapter

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

Section

G40-G47: Episodic and paroxysmal disorders (G40-G47)

Category G47

53 codes (43 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to G47.2:

• Sleep › rhythm inversion
• Rhythm › sleep, inversion

Inclusion Terms

• Disorders of the sleep wake schedule
• Inversion of nyctohemeral rhythm
• Inversion of sleep rhythm

Official Coding Guidelines

Dominant/nondominant side (TOC entry)

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

Pain - Category G89 (TOC entry)

b. Pain - Category G89.............................................................................................................. 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