← Back to the worklist · Whole encounter ENC-00001
Teodora Vance: Acute respiratory failure
ENC-00001 · 74F · Hospital Medicine · admitted Tue Nov 10, 2026 02:10 PM · in hospital · attending Dr. Cyrus Ellingham · resident Dr. Noor Halvorsen
Documented “acute hypoxic respiratory failure” (J96.01) but the criteria are not met: No hypoxaemia on room air (lowest SpO2 93%), oxygen no more than 2 L/min, no advanced support.
Documented vs supported
- Documented
- “acute hypoxic respiratory failure” · J96.01 Acute respiratory failure with hypoxia
- Criteria support
- criteria not met
- Outcome
- No hypoxaemia on room air (lowest SpO2 93%), oxygen no more than 2 L/min, no advanced support
- Rule
- Acute hypoxic respiratory failure v2026.11-1
- Published source
- Merck Manual Professional Version: Acute Hypoxemic Respiratory Failure (AHRF), including ARDS (2026), Definition/evaluation: PaO2 <60 mmHg, PaO2/FiO2 <300, or SpO2 <88%, with dyspnea and tachypnea · source (checked 2026-11-14)
- Contested
- Organizations use different oxygen-saturation cut-offs (SpO2 <88%, <=90% or <91% on room air). This rule uses <88% (the source above) and a LOCAL respiratory-rate cut-off of 28/min as one sign of respiratory distress.
Effect if the clinician agrees (illustrative)
- Change
- remove J96.01
- Secondary-diagnosis level
- MCC → removed
- MS-DRG (illustrative)
- 193 Simple pneumonia and pleurisy with MCC → 195 Simple pneumonia and pleurisy without CC/MCC
- Relative weight
- 1.3144 → 0.6285 (-0.6859)
- Codes before
- J18.9, N18.9, N28.9, I50.9, J96.01
- Codes after
- J18.9, N18.9, N28.9, I50.9
All open gaps on this encounter together: MS-DRG 193 → 193 (RW +0.0000). The grouping does not change; the record becomes accurate.
CC/MCC status, CC exclusions (subset) and relative weights from the public CMS FY2026 IPPS final rule tables (5, 6I, 6J, 6K). This is not a grouper and not a payment estimate. Queries never mention any of this.
Severity documentation index change SIMULATED
-1.0 points
SIMULATED: Illustrative severity weights (MCC = 1.0, CC = 0.5, non-CC = 0) summed over secondary diagnoses; not a validated risk-adjustment model and not a measured effect.
Evidence
Structured values are read by code from the cited rows. Note facts are shown only when the model's quote was found verbatim in the note.
| Input | Value | Source |
|---|---|---|
| Lowest SpO2 on room air (%) | 93.0 |
SpO2 93% on room air
|
| Highest respiratory rate (/min) | 21.0 |
respiratory rate 21/min
|
| Highest supplemental oxygen flow (L/min) | 2.0 |
O2 2 L/min (nasal cannula)
|
Rule trace (inputs, thresholds, outcome)
| Step | Expression | Inputs and thresholds read | Result |
|---|---|---|---|
| derived: measured | present(spo2_min_ra) or present(pao2_min_ra) or present(pf_min) |
pao2_min_ra=unknown, pf_min=unknown, spo2_min_ra=93.0 | true |
| derived: hypoxemia | coalesce(spo2_min_ra < t.spo2_ra, false) or coalesce(pao2_min_ra < t.pao2, false) or coalesce(pf_min < t.pf, false) |
pao2_min_ra=unknown, pf_min=unknown, spo2_min_ra=93.0, t.pao2=60, t.pf=300, t.spo2_ra=88 | false |
| derived: distress | coalesce(rr_max >= t.rr_distress, false) or coalesce(wob_increased, false) or adv_resp_support |
adv_resp_support=False, rr_max=21.0, t.rr_distress=28, wob_increased=unknown | false |
| outcome: chronic_baseline | home_o2 and hypoxemia |
home_o2=False, hypoxemia=False | false |
| outcome: met | hypoxemia and distress |
distress=False, hypoxemia=False | false |
| outcome: hypoxemia_only | hypoxemia |
hypoxemia=False | false |
| outcome: not_met | measured and not hypoxemia and o2_max_lpm <= t.o2_low and not adv_resp_support |
adv_resp_support=False, hypoxemia=False, measured=True, o2_max_lpm=2.0, t.o2_low=2 | true |
Documentation query
Title and question drafted by model clockworks-mock (audit entry #1957); clinical indicators and answer options assembled by code from the rule and the record.
Sign in to act. Sign in as a demo user (a CDI specialist sends queries).
DOCUMENTATION QUERY (draft) Title: Clarification request: respiratory documentation Encounter: ENC-00001 Patient: Teodora Vance To: Dr. Cyrus Ellingham Clinical indicators from the health record: - Documented in the record: "acute hypoxic respiratory failure" [Progress note DOC-000003] - SpO2 93% on room air (2026-11-10 22:30) [vital VIT-000011] - respiratory rate 21/min (2026-11-10 14:30) [vital VIT-000010] - O2 2 L/min (nasal cannula) (2026-11-10 22:35) [vital VIT-000013] Question: The indicators above are documented in this encounter. Could you clarify the status of the documented respiratory diagnosis? Response options (select one or write your own): ( ) Acute hypoxic respiratory failure: confirmed (please document the supporting clinical information) ( ) Acute hypoxic respiratory failure: ruled out ( ) Other explanation of the clinical findings (please specify): ____________ ( ) Unable to determine Please respond based on your independent clinical judgement. Any response, including "unable to determine", is acceptable. This query and your response are kept as part of the health record.
Other findings on this encounter
- Acute kidney injury · Specificity gap Documented “renal insufficiency” (N28.9); criteria support the more specific Acute kidney injury (KDIGO stage 2) (N17.9).
- Chronic kidney disease · Specificity gap Documented “CKD” (N18.9); criteria support the more specific Chronic kidney disease stage 3b (N18.32).
- Heart failure · Specificity gap Documented “CHF” (I50.9); criteria support the more specific Acute on chronic systolic (HFrEF) heart failure (I50.23).
History
| Seq | When (UTC) | Actor | Action | Entities | Decision / reason | Model / hashes |
|---|---|---|---|---|---|---|
| 1957 | 2026-11-14T20:57:22 | system:llm system |
llm.call |
ENC-00001, ENC-00001.respiratory_failure | — | clockworks-mock mock-1/exactdx.draft_query@1 prompt 4b440c31629c output 1d1d513022f3 entry adfc39aa4580 |
| 1131 | 2026-11-14T19:24:27 | system:llm system |
llm.call |
ENC-00001, ENC-00001.respiratory_failure | — | clockworks-mock mock-1/exactdx.draft_query@1 prompt 4b440c31629c output 1d1d513022f3 entry 4525d818887c |
| 389 | 2026-11-14T18:29:02 | system:llm system |
llm.call |
ENC-00001, ENC-00001.respiratory_failure | — | clockworks-mock mock-1/exactdx.draft_query@1 prompt 4b440c31629c output 1d1d513022f3 entry 1579c7c74530 |