Claims are assigned to common procedure types based on the inpatient or outpatient procedure codes present on the claim. Procedure types can include multiple procedure codes to group together procedures with similar methods (e.g., X-rays, CT scans, MRIs, etc.) and similar median payments.
Claims within APAC are identified by a unique claim ID. This unique claim ID can be used to identify all itemized portions of the claim together as one.
Inpatient Procedures
Inpatient claims are assigned to inpatient procedure types when the claim has a primary procedure code for a common inpatient procedure. Inpatient procedures follow the ICD-10-PCS coding system. For each unique claim ID that is assigned to a procedure type, the total payment is summed over all claim lines, providing the total payment for the entire hospitalization.
Outpatient Surgical Procedures
Outpatient surgical procedures are typically billed as multiple individual components. For example, an arthrogram of the shoulder will generally have four billed items: a bill for the dye injection to the shoulder, a bill for the X-ray guidance used to place the dye, a bill for the CT or MRI imaging after the dye was placed, and sometimes, a bill for additional anesthetics. If the outpatient procedure code on any claim line matches a Current Procedural Terminology (CPT) code for a common outpatient surgery, then that unique claim ID is assigned as an outpatient surgery procedure type. Payment is summed over all claim lines to provide the total payment associated with the outpatient surgery.
Common co-occurring outpatient surgeries – two distinct outpatient surgeries performed on the same patient on the same day – are reported as their own procedure types to better reflect the payments for multiple surgeries compared with individual surgeries. For 2023, these frequently occurring co-occurring surgery types are colonoscopy & EGD, mastectomy & lymph node biopsy, mastectomy & breast reconstruction, and lesion removal & wound repair - intermediate/complex. Surgeries that are part of a co-occurring surgery type are not also included in the individual surgery types. For example, the individual mastectomy procedure type does not include counts and payments for mastectomies performed with breast reconstruction.
All other outpatient procedures
For procedures in the Diagnostic Imaging and Testing, Outpatient Radiation and Chemotherapy, Outpatient Pathology and Laboratory, and Professional Services categories, procedure types are assigned when a relevant Current Procedural Terminology (CPT) code is present on a claim line. The reported payments reflect the total payment each time a procedure was performed.