Chapter XXII

Codes for special purposes

Bacterial agents resistant to antibiotics

Note: These categories should never be used in primary coding. They are provided for use as supplementary or additional codes when it is desired to identify the antibiotic to which a bacterial agent is resistant, in bacterial infection classified elsewhere.

U80 Agent resistant to penicillin and related antibiotics
U80.0 Penicillin resistant agent
U80.1 Methicillin resistant agent
U80.8 Agent resistant to other penicillin-related antibiotic

U81 Agent resistant to vancomycin and related antibiotics
U81.0 Vancomycin resistant agent
U81.8 Agent resistant to other vancomycin-related antibiotic

U88 Agent resistant to multiple antibiotics
Note: This category is provided for use when a bacterial agent is resistant to two or more antibiotics but there is insufficient detail to determine which antibiotic is contributing most to the "main condition". It should also be used for primary tabulation purposes when it is more convenient to record a single code; otherwise each specific antibiotic-resistant agent should be coded separately.

U89 Agent resistant to other and unspecified antibiotics
U89.8 Agent resistant to other single specified antibiotic
U89.9 Agent resistant to unspecified antibiotic