Z81.8 — Family history of other mental and behavioral disorders
Is Z81.8 billable?
Yes — Z81.8 is billable for FY2027. Z81.8 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. Z81.8 may be submitted for encounters from October 1, 2026 through September 30, 2027.
Z81.8 at a glance
| Code | Z81.8 |
|---|---|
| Description | Family history of other mental and behavioral disorders |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
What Medicare edits apply to Z81.8?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name Z81.8 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 Z81.8 group to?
Z81.8 sits in MDC 15 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.
- 795Normal Newbornmedical
How is Z81.8 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to Z81.8. They show the wording a clinician may have documented, which often differs from the Tabular description.
- History › family › psychiatric disorder
- History › family › self-harmful behavior
- History › family › violence, violent behavior
- Parasuicide › history of › in family (attempt)
- Self-harm › history › in family (attempted)
- Self-mutilation › history › in family (attempted)
- Self-poisoning › history › in family
- Suicide, suicidal › history of › in family (attempted)
- History › family › disease or disorder › behavioral NEC
- History › family › disease or disorder › mental NEC
- History › family › disease or disorder › psychiatric NEC
- History › family › mental › disorder NEC
Inclusion terms
Alternative wording in documentation that is classified to Z81.8.
- Conditions classifiable elsewhere in F01-F99
Code also — inherited from Z77-Z99
Two codes may be needed to describe the condition fully. Whether Z81.8 is sequenced first depends on the reason for the encounter.
- any follow-up examination (Z08-Z09)
How long has Z81.8 existed?
Z81.8 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.