Resistance to other single specified antibiotic

This code indicates that a bacterial infection has been identified as resistant to a specific antibiotic, other than those explicitly listed in other Z16 codes. This resistance means the antibiotic is ineffective against the pathogen, necessitating alternative treatment strategies.

Apply this code when laboratory testing (e.g., culture and sensitivity) confirms resistance to a single, named antibiotic that does not have its own dedicated Z16 resistance code. This is typically used as a secondary diagnosis to the underlying infection code.

• Always sequence the infection code first, followed by this resistance code.
• Ensure the medical record clearly documents the specific antibiotic to which the pathogen is resistant.
• Do not use this code for multidrug resistance or resistance to unspecified antibiotics.