ZPNYL - "Phenylalanine" replaced by PHETY - "Phenylalanine and Tyrosine"

Inactivated/Replace Test

Effective Date

07/21/2025

Included in Report

WML Test Directory Update Part B | July 2025

Notes

Inactivate with replacement
Waiting for approval for replacement as of 6/26/2025

Inactivated Test Details

Mnemonic

ZPNYL

Ordering Code

3508640

CPT-4 Codes(s)

82131

The CPT codes provided are for general informational purposes only and are based on an interpretation of AMA guidance. It is the sole responsibility of the billing party to determine CPT codes. Any questions regarding coding should be directed to the paying party.

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ZPNYL – “Phenylalanine” replaced by PHETY – “Phenylalanine and Tyrosine”