Extended criteria (experimental).
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for CDI staff. The primary surface is Before you sign (kidney, measurement only).
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← Back to the worklist · Whole encounter ENC-00088
Farah Elsworth: Heart failure
ENC-00088 · 71F · Hospital Medicine · admitted Sun Nov 01, 2026 03:43 PM · discharged Mon Nov 09, 2026 01:21 PM · attending Dr. Gideon Zeller · resident Dr. Greta Kowalczyk
Specificity gap Criteria met Open
Documented “heart failure” (I50.9); criteria support the more specific Acute on chronic systolic (HFrEF) heart failure (I50.23).
Documented vs supported
- Documented
- “heart failure” · I50.9 Heart failure, unspecified
- Criteria support
- Acute on chronic systolic (HFrEF) heart failure · I50.23 Acute on chronic systolic (congestive) heart failure
- Outcome
- LVEF 32% with 3 acute indicators and prior heart failure
- Rule
- Heart failure type (LVEF) and acuity v2026.11-1
- Published source
- Universal Definition and Classification of Heart Failure (HFSA/HFA/JHFS, 2021), as restated in Chandramouli et al., Clin Cardiol 2022 (2021), LVEF classification: HFrEF <=40%, HFmrEF 41-49%, HFpEF >=50%; HFimpEF = baseline <=40%, rise >=10 points, second LVEF >40% · source (checked 2026-11-14)
- Contested
- No guideline gives a numeric definition of "acute" versus "chronic" heart failure. This rule uses a LOCAL CONVENTION: at least two acute indicators (IV loop diuretic, elevated natriuretic peptide, new oxygen requirement) = acute; with a prior history of heart failure = acute on chronic; none with history = chronic; exactly one = clinical judgement.
Effect if the clinician agrees (illustrative)
- Change
- I50.9 -> I50.23
- Secondary-diagnosis level
- non-CC → MCC
- MS-DRG (illustrative)
- 378 GI hemorrhage with CC → 377 GI hemorrhage with MCC
- Relative weight
- 0.9807 → 1.8280 (+0.8473)
- Codes before
- K92.2, I50.9, D62, L89.159, K21.9, I10
- Codes after
- K92.2, D62, L89.159, K21.9, I10, I50.23
All open gaps on this encounter together: MS-DRG 378 → 377 (RW +0.8473).
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 |
|---|---|---|
| Latest LVEF within 12 months (%) | 32.0 |
echo LVEF 32%
|
| IV loop diuretic given this stay | True |
furosemide 40 mg IV
furosemide 40 mg IV
furosemide 40 mg IV
furosemide 40 mg IV
|
| Highest BNP this stay (pg/mL) | 1711.0 |
BNP 1711 pg/mL
|
| Supplemental oxygen started this stay without home oxygen supplemental oxygen started this stay without home oxygen on file |
True |
O2 4 L/min (nasal cannula)
|
| Prior heart failure on the problem list / history | True |
history: heart failure with reduced ejection fraction
|
Rule trace (inputs, thresholds, outcome)
| Step | Expression | Inputs and thresholds read | Result |
|---|---|---|---|
| derived: np_elevated | coalesce(bnp_max >= t.bnp, false) or coalesce(ntprobnp_max >= t.ntprobnp, false) |
bnp_max=1711.0, ntprobnp_max=unknown, t.bnp=100, t.ntprobnp=300 | true |
| derived: acute_count | count(iv_loop_diuretic, np_elevated, new_o2) |
iv_loop_diuretic=True, new_o2=True, np_elevated=True | 3 |
| derived: hf_type | case(lvef <= t.ref, 'systolic', lvef >= t.pres, 'diastolic', 'midrange') |
lvef=32.0, t.pres=50, t.ref=40 | systolic |
| derived: improved | coalesce(lvef_prior_min <= t.ref and lvef > t.ref and lvef - lvef_prior_min >= t.improved_rise, false) |
lvef=32.0, lvef_prior_min=unknown, t.improved_rise=10, t.ref=40 | false |
| derived: acuity | case(acute_count >= 2 and hf_history, 'acute on chronic', acute_count >= 2, 'acute', acute_count == 0 and hf_history, 'chronic', null) |
acute_count=3, hf_history=True | acute on chronic |
| outcome: improved_ef | improved |
improved=False | false |
| outcome: midrange | hf_type == 'midrange' |
hf_type=systolic | false |
| outcome: sys_aoc | hf_type == 'systolic' and acuity == 'acute on chronic' |
acuity=acute on chronic, hf_type=systolic | true |
Documentation query
Title and question drafted by model clockworks-mock (audit entry #2140); clinical indicators and answer options assembled by code from the rule and the record.
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DOCUMENTATION QUERY (draft) Title: Clarification request: cardiac documentation Encounter: ENC-00088 Patient: Farah Elsworth To: Dr. Gideon Zeller Clinical indicators from the health record: - Documented in the record: "heart failure" [Progress note DOC-000300] - echo LVEF 32% (2026-11-02 14:43) [echo ECH-000041] - furosemide 40 mg IV (2026-11-01 20:00) [med MED-000343] - furosemide 40 mg IV (2026-11-02 08:00) [med MED-000344] - furosemide 40 mg IV (2026-11-02 20:00) [med MED-000345] - furosemide 40 mg IV (2026-11-03 08:00) [med MED-000346] - BNP 1711 pg/mL (2026-11-01 16:43) [lab LAB-002958] - O2 4 L/min (nasal cannula) (2026-11-01 16:13) [vital VIT-008473] - history: heart failure with reduced ejection fraction [history HX-000032] Question: Based on your clinical judgement and the indicators above, can the type and acuity of the heart failure being treated be further specified? Response options (select one or write your own): ( ) Acute on chronic systolic heart failure (HFrEF) ( ) Chronic systolic heart failure (HFrEF) ( ) Other (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 blood loss anaemia · Clinical judgement required Clinical judgement required: Haemoglobin fell 1.4 g/dL without transfusion (between 1 and 2 g/dL).
- Pressure injury · Specificity gap Documented “sacral pressure ulcer” (L89.159); criteria support the more specific Pressure injury of sacral region, stage 4 (L89.154).
- Acute respiratory failure · Specificity gap Criteria support Acute respiratory failure with hypoxia (J96.01); no corresponding diagnosis is documented.
History
| Seq | When (UTC) | Actor | Action | Entities | Decision / reason | Model / hashes |
|---|---|---|---|---|---|---|
| 2140 | 2026-11-14T20:57:24 | system:llm system |
llm.call |
ENC-00088, ENC-00088.heart_failure | — | clockworks-mock mock-1/exactdx.draft_query@1 prompt 97eeabcf72dd output 752ce96b1cd3 entry a3998709e0eb |
| 1314 | 2026-11-14T19:24:30 | system:llm system |
llm.call |
ENC-00088, ENC-00088.heart_failure | — | clockworks-mock mock-1/exactdx.draft_query@1 prompt 97eeabcf72dd output 752ce96b1cd3 entry a6c405a74810 |
| 572 | 2026-11-14T18:29:05 | system:llm system |
llm.call |
ENC-00088, ENC-00088.heart_failure | — | clockworks-mock mock-1/exactdx.draft_query@1 prompt 97eeabcf72dd output 752ce96b1cd3 entry f1958d23a5c1 |