OASIS · Section A
A0810 — Sex
Response options, how to score it, and the error that most often sends the record back. Cited to Ch. 1, Item A0810.
OASIS-E2 v1.00.0 · ingested 2026-04-26
Response options
| Value | Meaning |
|---|---|
| 1 | Male |
| 2 | Female |
How to score it
Record the patient's sex as documented in the medical record. A0810 was introduced in OASIS-E (effective January 2023) and replaced the legacy M0069 'Gender' item. Required at SOC and ROC time points.
The common error
Mapping a non-binary or undocumented gender identity to a coded value the spec does not allow. CMS only accepts 1 (Male) or 2 (Female); document any nuance in the clinical narrative, not in this field.
Source: OASIS-E2 Guidance Manual — Ch. 1, Item A0810. Verified 2026-04-26.
Nearby Section A items
The monthly home health regs digest
What CMS changed, what's due next, and what to do about it — one email a month, no fluff.