R79. 1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2022 edition of ICD-10-CM R79.
Code Z23, which is used to identify encounters for inoculations and vaccinations, indicates that a patient is being seen to receive a prophylactic inoculation against a disease. If the immunization is given during a routine preventive health care examination, Code Z23 would be a secondary code.
ICD-10-CM Code for Encounter for preprocedural laboratory examination Z01. 812.
Encounter for other specified aftercareICD-10 code Z51. 89 for Encounter for other specified aftercare is a medical classification as listed by WHO under the range - Factors influencing health status and contact with health services .
The ICD-10 code to use for flu vaccination is Z23, encounter for immunization. There are many CPT codes to describe influenza vaccine, varying by manufacturer, product and age group.
90686, “Influenza virus vaccine, quadrivalent (IIV4), split virus, preservative free, 0.5 mL dosage, for intramuscular use.”
Most pre-op exams will be coded with Z01. 818. The ICD-10 instructions say to use the preprocedural diagnosis code first, and then the reason for the surgery and any additional findings.
Preoperative examinations may be billed by using an appropriate CPT code (e.g., new patient, established patient, or consultation). Such non-global preoperative examinations are payable if they are medically necessary and meet the documentation and other requirements for the service billed.
When the surgeon sees the patient the day of surgery prior to the operation that visit is not billable. This is because the preoperative time of that visit has already been valued in the 90-day global code (CPT 27447) as part of the pre-time package.
Use Z codes to code for surgical aftercare. Z47. 89, Encounter for other orthopedic aftercare, and. Z47. 1, Aftercare following joint replacement surgery.
This second example uses Z09, which indicates surveillance following completed treatment of a disease, condition, or injury. Its use implies that the condition has been fully treated and no longer exists. Z09 would be used for all annual follow-up exams, provided no complications or symptoms are present.
For example, if a patient with severe degenerative osteoarthritis of the hip, underwent hip replacement and the current encounter/admission is for rehabilitation, report code Z47. 1, Aftercare following joint replacement surgery, as the first-listed or principal diagnosis.