Z72.821 Inadequate sleep hygiene

Billable ICD-10-CM code, FY2026. Exempt from present-on-admission (POA) reporting.

Applicable to

• Bad sleep habits
• Irregular sleep habits
• Unhealthy sleep wake schedule

Excludes1 (never code together)

• insomnia (F51.0-, G47.0-)

Applies from Z72 Problems related to lifestyle

Excludes2 (not included here)

• problems related to life-management difficulty (Z73.-)
• problems related to socioeconomic and psychosocial circumstances (Z55-Z65)

MS-DRG index

Defines the logic of DRG(s) 951 in MDC 23.

Approximate ICD-9-CM (GEMs)

• V69.8 Other problems related to lifestyle (approximate)

Medicare Code Edits (MCE v43.1 (April 2026))

• Unacceptable principal diagnosis: These codes describe a circumstance which influences care but is not a current illness or injury, or capture only an underlying condition, and are unacceptable as principal diagnosis.

Diagnosis Index entries for Z72.821

• Behavior › sleep-incompatible
• Excess, excessive, excessively › napping
• Habit, habituation › bad sleep
• Habit, habituation › irregular sleep
• History › personal (of) › sleep-wake cycle problem
• History › personal (of) › unhealthy sleep-wake cycle
• Hygiene, sleep › abuse
• Hygiene, sleep › inadequate
• Hygiene, sleep › poor
• Sleep hygiene › abuse
• Sleep hygiene › inadequate
• Sleep hygiene › poor

Nearby codes

• Z72.81 Antisocial behavior
• Z72.810 Child and adolescent antisocial behavior
• Z72.811 Adult antisocial behavior
• Z72.82 Problems related to sleep
• Z72.820 Sleep deprivation
• Z72.821 Inadequate sleep hygiene (this code)
• Z72.823 Risk of suffocation (smothering) under another while sleeping
• Z72.89 Other problems related to lifestyle
• Z72.9 Problem related to lifestyle, unspecified