Urosepsis or UTI? Conflicting Documentation and the Query That Must Come First
A 71-year-old woman is admitted from the ED with two days of dysuria and new confusion. ED vitals: temperature 39.1°C, heart rate 118, respiratory rate 24, blood pressure 88/52 that responds to a 1 L crystalloid bolus, WBC 14.2, lactate 2.4 mmol/L. Urinalysis is positive for nitrites and leukocytes; blood and urine cultures grow E. coli. The ED note documents 'urosepsis - sepsis due to UTI.' The hospitalist's admission note reads 'UTI with systemic inflammatory response; sepsis not clearly established, will reassess.' The patient improves on IV ceftriaxone and goes home on day three. The coder must assign the principal diagnosis and decide whether A41.51 and an R65.2- code are supported.
1. Can the coder assign sepsis based on the ED documentation alone? What is the correct next step?
Read the worked answer
No. Two physicians in the same record state different things: the ED says sepsis is present, the hospitalist says it is not clearly established. The coder may not pick the version that pays better, may not average the two, and may not infer sepsis from fever, tachycardia, tachypnea, leukocytosis, and a positive culture. SIRS criteria plus an organism are not a physician diagnosis of sepsis; the ICD-10-CM classification requires the provider's diagnostic statement that sepsis is present.
Next step: a non-leading physician query. It should:
- State the conflicting documentation and cite locations.
- Present the clinical indicators (vitals, lactate, cultures, response to fluids).
- Offer clinically reasonable options - e.g., sepsis due to E. coli UTI; UTI with systemic inflammatory response without sepsis; other.
- Ask whether the patient meets criteria for severe sepsis, and whether the condition was present on admission.
- Be a permanent part of the health record with the response and the responding physician's signature.
Until a response arrives, code only what is documented and supported - for example the UTI - and do not default to the higher-weighted sepsis code.
2. Assume the hospitalist responds: 'Urosepsis due to E. coli urinary tract infection; sepsis was present on admission; hypotension responded to fluids.' How is the case coded and sequenced?
Read the worked answer
Sequencing: the systemic infection goes first, followed by the localized infection.
- A41.51 - Sepsis due to Escherichia coli - principal diagnosis.
- N39.0 - Urinary tract infection, site not specified - additional.
- POA indicator Y on the sepsis code, since the physician documented it was present on admission.
Do not add B96.20. The alphabetic index entry for E. coli as a cause of disease classified elsewhere carries an Excludes1 note for E. coli sepsis (A41.51), so B96.20 is not reported alongside A41.51. Adding it is a common coding error that survives because it rarely triggers an edit.
Severe sepsis versus septic shock:
- R65.20 only if the physician documents severe sepsis. Hypotension that resolves with a fluid bolus, with lactate 2.4 and no vasopressors, does not meet the criteria for septic shock.
- R65.21 would require documented shock with vasopressor support to maintain MAP and persistent lactate elevation despite adequate resuscitation. The clinical indicators here fall short, so the coder should not assign R65.21 on the strength of one low blood pressure reading.
If the physician later documents septic shock, add R65.21 and verify the vasopressor and lactate documentation before doing so.
3. The query goes out but no response arrives before the bill must drop. What do you do?
Read the worked answer
Code only what the record supports - do not let the billing calendar drive the diagnosis.
- Assign the documented, supported conditions (for example N39.0, and R41.82 for the altered mental status if the physician documented it as a diagnosis).
- Do not assign A41.51 or R65.2- on presumption, and do not 'hold' the claim indefinitely waiting for a response that may never come.
- Keep the query, the date sent, the follow-up attempts, and the non-response in the record. A documented unanswered query protects the hospital on audit; an undocumented assumption does not.
- If a response arrives after the claim drops, correct the claim through the appropriate adjustment process within timely filing limits.
The compliance principle is simple: a coder may never generate a diagnosis the physician did not document, and a physician's silence is not a diagnosis.