Take a look specifically at the code Z16. 20, Resistance to unspecified antibiotic, and also take a look at code Z16. 29, Resistance to other single specified antibiotic.
Z16. 11 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
Carbapenem-resistant Enterobacteriacae (CRE), for example, is classified using one code (B96. 89) for “other specified bacterial agent as the cause of diseases classified elsewhere,” plus another (Z16. 10) for “resistance to unspecified beta lactam antibiotics”(2).
ICD-10 code Z51 for Encounter for other aftercare and medical care is a medical classification as listed by WHO under the range - Factors influencing health status and contact with health services .
A code from categories Z03-Z04 can be assigned only as the principal diagnosis or reason for encounter, never as a secondary diagnosis.
Resistance to other antimicrobial drugs ICD-10-CM Z16. 35 is grouped within Diagnostic Related Group(s) (MS-DRG v39.0): 867 Other infectious and parasitic diseases diagnoses with mcc.
Carbapenem-resistant Enterobacteriaceae (CRE) or carbapenemase-producing Enterobacteriaceae (CPE) are Gram-negative bacteria that are resistant to the carbapenem class of antibiotics, considered the drugs of last resort for such infections.
Both the terms CRE (carbapenem-resistant Enterobacteriaceae) and CPE (carbapenemase-producing Enterobacteriaceae) appear in the literature and are sometimes used interchangeably.
CRE can be spread from person to person through contact with an infected or colonised person. This is either directly from the hands of another person or indirectly from environmental surfaces or medical equipment that have become contaminated. It is not spread through the air or by coughing or sneezing.
The ICD-10 code for an evaluation prior to chemotherapy is Z01. 818 (encounter for examinations prior to antineoplastic chemotherapy). Z51. 11 is attached to the billing for the administration of chemotherapy so would not be used by the provider when the patient is going to a hospital-owned infusion center.
11 or Z51. 12 is the only diagnosis on the line, then the procedure or service will be denied because this diagnosis should be assigned as a secondary diagnosis. When the Primary, First-Listed, Principal or Only diagnosis code is a Sequela diagnosis code, then the claim line will be denied.
Z85. 3 can be billed as a primary diagnosis if that is the reason for the visit, but follow up after completed treatment for cancer should coded as Z08 as the primary diagnosis.