If you've been completing OASIS for any length of time, M0069 — the "Gender" item — has been muscle memory. As of April 1, 2026, M0069 is gone and A0810 (Sex) takes its place. The change is small in coding terms, meaningful in what it signals about CMS's data strategy. This is part of our OASIS-E2 series.
TL;DR
- M0069 (Gender) → A0810 (Sex) — item number changed, item title changed.
- Response options unchanged: 1 = Male, 2 = Female.
- The "If the patient does not self-identify" guidance has been removed. Code from administrative records, not patient self-identification.
- Same time points as before: SOC, ROC, Follow-Up, Transfer, Discharge, Death at Home.
- Why: CMS is aligning home health data with SNF, IRF, and Social Security Administration standards.
Who this is for
Field clinicians completing any OASIS time point. EHR administrators verifying their system updated correctly on April 1.
What Changed
| M0069 (OASIS-E1) | A0810 (OASIS-E2) | |
|---|---|---|
| Item number | M0069 | A0810 |
| Item title | Gender | Sex |
| Response 1 | Male | Male |
| Response 2 | Female | Female |
| Self-identification guidance | "If the patient does not self-identify..." | Removed |
| Time points collected | All (SOC, ROC, FU, Transfer, DC, Death at Home) | All (unchanged) |
| Skip patterns | None affected | None affected |
If you'd taken a screenshot of M0069 in March and put it side-by-side with A0810 in April, the only thing on the actual response screen that changed is the item number and the word "Gender" → "Sex." The structural difference is everything happening behind the item.
How to Code A0810
Code the patient's sex as recorded in their administrative records — Medicare/Medicaid claims data, the patient's referral/intake paperwork, or other administrative source. This is now strictly an administrative data point, not a clinical assessment.
- 1 = Male
- 2 = Female
There are no other valid responses. If the administrative record is inconsistent with what the patient tells you, CMS's expectation is that you defer to the administrative record. This is a notable change from M0069's E1-era guidance, which gave clinicians latitude to honor patient self-identification.
Tip
The simplest way to operationalize this: have your intake team capture sex from the referral or insurance card during patient onboarding, and let it auto-populate A0810 at SOC. Don't ask the patient at the visit unless the administrative record is genuinely missing.
What Was Removed and Why
The OASIS-E1 version of M0069 included the response-specific instruction:
If the patient does not self-identify as either Male or Female, code the response that most closely reflects the patient's self-identity.
That sentence is gone in OASIS-E2.
CMS's rationale, summarized from the Final Rule and Guidance Manual:
- Cross-setting standardization. SNFs (MDS), IRFs (IRF-PAI), LTCHs (LCDS), and home health (OASIS) all need to capture this item the same way for cross-setting analytics, risk adjustment, and quality measurement.
- SSA alignment. The Social Security Administration uses a binary sex field for Medicare beneficiary records. OASIS now matches.
- Reduced ambiguity. When clinicians at different settings interpret the field differently, the data becomes unusable for risk adjustment.
This is a CMS data-strategy decision, not a clinical decision. It does not affect how you treat the patient or what you write in your visit narrative. It only affects what you code in this one OASIS field.
Common Questions From Clinicians
What if the patient asks why I'm asking about their sex?
The honest answer: you're not asking — you're transcribing it from their administrative record. If they ask, the truthful explanation is that CMS standardized this item across all post-acute care settings and it now follows the patient's Medicare record.
What if the administrative record is missing?
If you have no source of truth and have to ask the patient, code based on what they tell you. CMS has not provided detailed guidance on this edge case beyond instructing that the response options are limited to Male and Female.
Does my EHR auto-populate this from intake?
It should, after the April 1, 2026 update. If your EHR is still asking the field clinician to enter A0810 from scratch, ask your vendor to enable auto-population from the patient demographics.
Is M0069 still valid for assessments started before April 1?
Yes. The version is determined by the M0090 completion date. If M0090 is March 31, 2026 or earlier, you're on OASIS-E1 and M0069 is the correct item. If M0090 is April 1, 2026 or later, you're on OASIS-E2 and A0810 is the correct item — even if you started the assessment before April 1.
Will this affect any quality measures or payment?
No. Sex/gender is used as a risk-adjustment variable across multiple measures, but the change from M0069 to A0810 is structural — the data point itself is the same field with the same response options. Risk adjustment continues unchanged.
What This Signals About OASIS Going Forward
The M0069 → A0810 change is one of several "A-series" item additions in OASIS-E2. CMS is gradually replacing legacy "M-coded" items (home-health-specific) with "A-coded" items (cross-setting standardized). Expect more of this in OASIS-E3 (whenever that lands — OMB approval for E2 runs through December 31, 2028).
The practical implication for you: items that get an A-code are usually administrative/demographic items where CMS wants identical capture across post-acute settings. Items that stay M-coded are home-health-specific clinical items.
Sources
- OASIS-E2 Guidance Manual (CMS) — A0810 item-level instructions
- OASIS-E1 to OASIS-E2 Change Table — M0069 → A0810 entry
- OASIS-E2 All Items (CMS, effective 04/01/2026)
- OASIS Data Specifications
Info
This article is part of our OASIS-E2 series. See also: the OASIS-E2 Cheat Sheet (full overview), Intercepted Falls Documentation, and A1255 Transportation Scoring.
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