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datatools.ahrq.gov/hcupnet/glossary/
October 01, 2015 - All remaining codes — both ICD-9-CM and CPT — are considered secondary procedures and are included in … You can also examine the secondary diagnoses associated with that principal diagnosis, for example, “ … What secondary diagnoses also appear on the discharge record for a principally diagnosed acute myocardial … on the discharge record with the first-listed or principal diagnosis you chose, for example, “What secondary … Secondary procedures – Additional procedures that appear on the discharge record with the first-listed
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datatools.ahrq.gov/hcupnet/faq/
January 01, 2023 - For an analysis that examines common secondary diagnoses or procedures most related to the principal/
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datatools.ahrq.gov/hcup-fast-stats/faq/
December 01, 2020 - OR procedures are identified using all-listed procedures (principal and secondary) that are available
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datatools.ahrq.gov/action-alliance/wp-content/uploads/sites/8/2025/09/qsrs-2021-2023-adverse-event-data-report.pdf
January 01, 2025 - Pressure Injury/Ulcer
(PI)
Advancing PI or secondary comorbidity in PI present
on admission
New