Chapter XXII
Codes for special purposes
(U00-U85)

Resistance to antimicrobial and antineoplastic drugs
(U82-U85)

Note:

These categories should never be used in primary coding. The codes are provided for use as supplementary or additional codes when it is desired to identify the resistance, non-responsiveness and refractive properties of a condition to antimicrobials and antineoplastic drugs.

U82 Resistance to betalactam antibiotics

Coding-Hint
Use additional code (B95-B98), if desired, to identify agents resistant to betalactam antibiotic treatment.
U82.0 Resistance to penicillin
Incl.:
Resistance to:
  • Amoxicillin
  • Ampicillin
U82.1 Resistance to methicillin
Incl.:
Resistance to:
  • Cloxacillin
  • Flucloxacillin
  • Oxacillin
U82.2 Extended spectrum betalactamase (ESBL) resistance
U82.8 Resistance to other betalactam antibiotics
U82.9 Resistance to betalactam antibiotics, unspecified

U83 Resistance to other antibiotics

Coding-Hint
Use additional code (B95-B98), if desired, to identify agents resistant to other antibiotic treatment
U83.0 Resistance to vancomycin
U83.1 Resistance to other vancomycin related antibiotics
U83.2 Resistance to quinolones
U83.7 Resistance to multiple antibiotics
U83.8 Resistance to other single specified antibiotic
U83.9 Resistance to unspecified antibiotic
Incl.:
Resistance to antibiotics NOS

U84 Resistance to other antimicrobial drugs

Coding-Hint
Use additional code (B95-B98), if desired, to identify agents resistant to antimicrobial drugs.
Excl.:
Resistance to antibiotics ( U82-U83)
U84.0 Resistance to antiparasitic drug(s)
Incl.:
Resistance to quinine and related compounds
U84.1 Resistance to antifungal drug(s)
U84.2 Resistance to antiviral drug(s)
U84.3 Resistance to tuberculostatic drug(s)
U84.7 Resistance to multiple antimicrobial drugs
Excl.:
Resistance to multiple antibiotics only ( U83.7)
U84.8 Resistance to other specified antimicrobial drug
U84.9 Resistance to unspecified antimicrobial drugs
Incl.:
Drug resistance NOS

U85 Resistance to antineoplastic drugs

Incl.:
Non-responsiveness to antineoplastic drugs
Refractory cancer