Z53.21 — Procedure and treatment not carried out due to patient leaving prior to being seen by health care provider
Is Z53.21 billable?
Yes — Z53.21 is billable for FY2027. Z53.21 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. Z53.21 may be submitted for encounters from October 1, 2026 through September 30, 2027.
Z53.21 at a glance
| Code | Z53.21 |
|---|---|
| Description | Procedure and treatment not carried out due to patient leaving prior to being seen by health care provider |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
What Medicare edits apply to Z53.21?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name Z53.21 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 Z53.21 group to?
Z53.21 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 Z53.21 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to Z53.21. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Refusal of › treatment › left without being seen
- Procedure › not done › because of › patient's decision › left without being seen (surgical)
Excludes2 — not included here — inherited from Z40-Z53
The conditions below are not part of Z53.21, but a patient may have both at the same time. When documentation supports it, Z53.21 and the excluded code may both be reported.
- follow-up examination for medical surveillance after treatment (Z08-Z09)
How long has Z53.21 existed?
Z53.21 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.