Is Z16.1 a billable code?
No. Z16.1 is a header code that groups 5 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
Z16.1: Resistance to beta lactam antibiotics
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
Z16.1 groups related diagnoses under resistance to beta lactam antibiotics. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under Z16.1
- Z16.10Resistance to unspecified beta lactam antibiotics
- Z16.11Resistance to penicillins
- Z16.12Extended spectrum beta lactamase (ESBL) resistance
- Z16.13Resistance to carbapenem
- Z16.19Resistance to other specified beta lactam antibiotics
Other codes in Z16 Resistance to antimicrobial drugs
Z16.1 questions
What does Z16.1 mean?
Z16.1 is the ICD-10-CM code for Resistance to beta lactam antibiotics. It is in chapter 22, Factors influencing health status and contact with health services (Z00-Z99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.