Z87.820 — Personal history of traumatic brain injury
Is Z87.820 billable?
Yes — Z87.820 is billable for FY2027. Z87.820 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. Z87.820 may be submitted for encounters from October 1, 2026 through September 30, 2027.
Z87.820 at a glance
| Code | Z87.820 |
|---|---|
| Description | Personal history of traumatic brain injury |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
What Medicare edits apply to Z87.820?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name Z87.820 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 Z87.820 group to?
Z87.820 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 Z87.820 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to Z87.820. They show the wording a clinician may have documented, which often differs from the Tabular description.
- History › personal › brain injury
- History › personal › traumatic brain injury
Excludes1 — never code together
The conditions below can never be reported together with Z87.820 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- personal history of transient ischemic attack (TIA), and cerebral infarction without residual deficits (Z86.73)
Code first — inherited from Z87
The underlying condition below must be sequenced before Z87.820. Z87.820 describes a manifestation and cannot be the principal or first-listed diagnosis.
- any follow-up examination after treatment (Z09)
Excludes2 — not included here — inherited from Z87.8
The conditions below are not part of Z87.820, but a patient may have both at the same time. When documentation supports it, Z87.820 and the excluded code may both be reported.
- personal history of self harm (Z91.5-)
Code also — inherited from Z77-Z99
Two codes may be needed to describe the condition fully. Whether Z87.820 is sequenced first depends on the reason for the encounter.
- any follow-up examination (Z08-Z09)
How long has Z87.820 existed?
Z87.820 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.