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CPT® Codes — Pathology and Laboratory Procedures

This code range includes pathology procedure codes and CPT® codes for laboratory tests. The American Medical Association (AMA) maintains the Current Procedural Terminology (CPT®) code set.

The laboratory and pathology CPT® code range is divided into smaller groupings, covering areas such as disease panels, drug assays, urinalysis, molecular pathology, genomic sequencing, multianalyte assays with algorithmic analyses, immunology, transfusion medicine, microbiology, and surgical pathology.

Surgical pathology codes may include long lists of anatomic examples to help you identify the correct code. The lab and pathology coding guidelines included with the code range are also essential to correct coding.

For unlisted laboratory and pathology billing codes, meaning those procedures or services that do not have a more specific and appropriate CPT® code available, the pathology and laboratory CPT® code set includes a long list of codes, from 81099 for unlisted urinalysis procedures to 89398 for unlisted laboratory procedures for reproductive medicine.