Z72.821 — Inadequate sleep hygiene
Is Z72.821 billable?
Yes — Z72.821 is billable for FY2027. Z72.821 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. Z72.821 may be submitted for encounters from October 1, 2026 through September 30, 2027.
Z72.821 at a glance
| Code | Z72.821 |
|---|---|
| Description | Inadequate sleep hygiene |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
What Medicare edits apply to Z72.821?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name Z72.821 directly.
CMS will reject this code as the principal diagnosis on an inpatient claim. It describes something other than the condition chiefly responsible for the admission.
Which MS-DRGs does Z72.821 group to?
Z72.821 sits in MDC 23 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 951Other Factors Influencing Health Statusmedical
How is Z72.821 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to Z72.821. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Behavior › sleep-incompatible
- Excess, excessive, excessively › napping
- Habit, habituation › bad sleep
- Habit, habituation › irregular sleep
- Hygiene, sleep › abuse
- Hygiene, sleep › inadequate
- Hygiene, sleep › poor
- Sleep hygiene › abuse
- Sleep hygiene › inadequate
- Sleep hygiene › poor
- History › personal › sleep-wake cycle problem
- History › personal › unhealthy sleep-wake cycle
Excludes1 — never code together
The conditions below can never be reported together with Z72.821 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Inclusion terms
Alternative wording in documentation that is classified to Z72.821.
- Bad sleep habits
- Irregular sleep habits
- Unhealthy sleep wake schedule
Excludes2 — not included here — inherited from Z72
The conditions below are not part of Z72.821, but a patient may have both at the same time. When documentation supports it, Z72.821 and the excluded code may both be reported.
How long has Z72.821 existed?
Z72.821 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.