CPT 87491: Chlamydia trachomatis NAAT – Not a PEG Code

CPT 87491 = Infectious agent detection by nucleic acid (DNA/RNA); Chlamydia trachomatis, amplified probe technique.

Correction: Some sources erroneously link this code to percutaneous endoscopic gastrostomy (PEG). PEG placement is coded 43246 (EGD with PEG) or 49440 (fluoroscopic).

87491 Details

• Method: Nucleic acid amplification test (NAAT) – PCR, TMA, SDA, etc.
• Specimens: Urine, endocervical, urethral, rectal, or pharyngeal swabs.
• Reporting: Per organism; use 87492 for Neisseria gonorrhoeae (often co-ordered).

Coding Tip

Microbiology codes (87xxx) are distinct from procedure/surgery codes (4xxxx). Always verify in the current CPT® codebook to avoid costly errors.