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← Back to the worklist · Whole encounter ENC-00127

Odette Brightwater: Acute blood loss anaemia

ENC-00127 · 51M · Hospital Medicine · admitted Wed Oct 28, 2026 08:16 AM · discharged Thu Nov 05, 2026 02:58 PM · attending Dr. Isaac Abernath · resident Dr. Greta Kowalczyk

Specificity gap Criteria met Open

Documented “anemia” (D64.9); criteria support the more specific Acute blood loss anemia (D62).

Documented vs supported

Documented: “anemia” · D64.9 Anemia, unspecified
Criteria support: Acute blood loss anemia · D62 Acute posthemorrhagic anemia
Outcome: Haemoglobin fell 3.5 g/dL to 9.2 with 2 unit(s) transfused and a documented bleeding source
Rule: Acute blood loss anaemia v2026.11-1
Published source: WHO guideline on haemoglobin cutoffs to define anaemia in individuals and populations (2024), Adult cut-offs: men <13 g/dL, non-pregnant women <12 g/dL (unchanged from 2011) · source (checked 2026-11-14)
Contested: There is no published clinical definition of "acute blood loss anaemia". This rule is a LOCAL CONVENTION: WHO anaemia threshold at the nadir, a documented bleeding source, and an acute fall of >=2 g/dL OR >=2 units transfused (borrowed from the ISTH major-bleeding definition, which secondary restatements word inconsistently as AND/OR).

Effect if the clinician agrees (illustrative)

Change: D64.9 -> D62
Secondary-diagnosis level: non-CC → CC
MS-DRG (illustrative): 871 Septicemia or severe sepsis without MV >96 hours with MCC → 871 Septicemia or severe sepsis without MV >96 hours with MCC
Relative weight: 1.9425 → 1.9425 (+0.0000)
Codes before: A41.9, J18.9, E44.0, D64.9, E11.9
Codes after: A41.9, J18.9, E44.0, E11.9, D62

All open gaps on this encounter together: MS-DRG 871 → 194 (RW -1.1366).

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

0.5 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.

Evidence (each item cited to a source row or a quoted span)
Input	Value	Source
Sex	M	sex M · encounter ENC-00127
First haemoglobin this stay (g/dL)	12.7	hemoglobin 12.7 g/dL (first) · lab LAB-004316 · 2026-10-28 09:16
Lowest haemoglobin this stay (g/dL)	9.2	hemoglobin 9.2 g/dL (lowest) · lab LAB-004318 · 2026-10-30 05:00
Highest value before the nadir minus the nadir (g/dL) highest value before the nadir minus the nadir	3.5	hemoglobin 12.7 · lab LAB-004316 · 2026-10-28 09:16 hemoglobin 9.2 · lab LAB-004318 · 2026-10-30 05:00
Red cell units transfused	2	transfuse 2 unit(s) PRBC · order ORD-000108 · 2026-10-29 09:00
A bleeding source quoted from a note, or a bleeding principal diagnosis	True	“bright red blood per rectum” · History and physical DOC-000430, p. 1, line 5 · quoted span verified Show the quote in the note … ess: 51-year-old man admitted with sepsis. Chest x-ray shows multifocal pneumonia; blood cultures drawn and ceftriaxone started. Hospital course complicated by bright red blood per rectum. Past medical history: type 2 diabetes. Review of systems otherwise negative. Exam: Lungs: scattered crackles at the bases, no distress. Assessment and plan: 1 …

Rule trace (inputs, thresholds, outcome)

Rule trace (rule blood_loss_anemia v2026.11-1; evaluated in order, first true outcome wins; "unknown" = missing input)
Step	Expression	Inputs and thresholds read	Result
derived: anaemic	`case(sex == 'M', hgb_nadir < t.hb_m, sex == 'F', hgb_nadir < t.hb_f, null)`	hgb_nadir=9.2, sex=M, t.hb_f=12, t.hb_m=13	true
derived: acute_fall	`hgb_drop >= t.drop_major or prbc_units >= t.prbc_major`	hgb_drop=3.5, prbc_units=2, t.drop_major=2.0, t.prbc_major=2	true
outcome: met	`bleeding_documented and anaemic and acute_fall`	acute_fall=True, anaemic=True, bleeding_documented=True	true

Documentation query

Title and question drafted by model clockworks-mock (audit entry #2212); clinical indicators and answer options assembled by code from the rule and the record.

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DOCUMENTATION QUERY (draft)
Title: Clarification request: hematology documentation
Encounter: ENC-00127   Patient: Odette Brightwater   To: Dr. Isaac Abernath

Clinical indicators from the health record:
- Documented in the record: "anemia" [Progress note DOC-000431]
- sex M [encounter ENC-00127]
- hemoglobin 12.7 g/dL (first) (2026-10-28 09:16) [lab LAB-004316]
- hemoglobin 9.2 g/dL (lowest) (2026-10-30 05:00) [lab LAB-004318]
- transfuse 2 unit(s) PRBC (2026-10-29 09:00) [order ORD-000108]
- "bright red blood per rectum" (2026-10-28 11:16) [History and physical DOC-000430, p. 1, line 5]

Question:
Based on your clinical judgement and the indicators above, can the type or cause of the condition being monitored and treated be further specified?

Response options (select one or write your own):
( ) Acute blood loss anemia
( ) Anemia, type not further specified
( ) 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

Sepsis · Clinical validation gap Documented “sepsis” (A41.9) but the criteria are not met: Neither definition met: 0 SIRS criteria, SOFA change 0.

History

Audit entries for this finding (newest first)
Seq	When (UTC)	Actor	Action	Entities	Decision / reason	Model / hashes
2212	2026-11-14T20:57:25	system:llm system	`llm.call`	ENC-00127, ENC-00127.blood_loss_anemia	—	clockworks-mock mock-1/exactdx.draft_query@1 prompt 6be16a7af78b output bfa18fc1e32e entry 66c0780df21c
1386	2026-11-14T19:24:31	system:llm system	`llm.call`	ENC-00127, ENC-00127.blood_loss_anemia	—	clockworks-mock mock-1/exactdx.draft_query@1 prompt 6be16a7af78b output bfa18fc1e32e entry 11e123564ee4
644	2026-11-14T18:29:06	system:llm system	`llm.call`	ENC-00127, ENC-00127.blood_loss_anemia	—	clockworks-mock mock-1/exactdx.draft_query@1 prompt 6be16a7af78b output bfa18fc1e32e entry a41fd247d3c6