. 2019 Feb 20;11:179–189. doi: 10.2147/CEOR.S191831

Table S1.

Current procedure terminology codes for identifying testing cohorts

Procedure	CPT code occurrence
AMP cohort	Between January 1, 2013 and December 31, 2013, a claim with: • 4 units of 87798, and • 2 units of 87481 (all units must occur on the same date with a null or 59 modifier indicating a distinct procedural service) Between January 1, 2014 and September 30, 2016, a claim with: • 3 units of 87798, and • 2 units of 87481, and • 1 unit of 87661 (all units must occur on the same date with a null or 59 modifier indicating a distinct procedural service)
NAMP cohort	A claim with: • 1 unit of 87480, and • 1 unit of 87510, and • 1 unit of 87660 (all units must occur on the same date)

Procedure

CPT code occurrence

AMP cohort

Between January 1, 2013 and December 31, 2013, a claim with:
• 4 units of 87798, and
• 2 units of 87481
(all units must occur on the same date with a null or 59 modifier indicating a distinct procedural service) Between January 1, 2014 and September 30, 2016, a claim with:
• 3 units of 87798, and
• 2 units of 87481, and
• 1 unit of 87661
(all units must occur on the same date with a null or 59 modifier indicating a distinct procedural service)

NAMP cohort

A claim with:
• 1 unit of 87480, and
• 1 unit of 87510, and
• 1 unit of 87660
(all units must occur on the same date)

Abbreviations: AMP, amplified molecular probe test; CPT, current procedural terminology; NAMP, non-amplified molecular probe test.