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Z Codes That May Only be Principal/First-Listed Diagnosis

By:  Chris Woolstenhulme, QCC, CMCS, CPC, CMRS
Published:  February 28th, 2018

Z Codes That May Only be Principal/First-Listed Diagnosis

According to 2018 Guidelines section: 1;C.21.c.16, the following Z codes/categories may only be reported as the principal/first-listed diagnosis, except when there are multiple encounters on the same day and the medical records for the encounters are combined:

Z00         Encounter for general examination without complaint, suspected or reported diagnosis

   Except: Z00.6

Z01         Encounter for other special examination without complaint, suspected or reported diagnosis

Z02         Encounter for administrative examination

Z03         Encounter for medical observation for suspected diseases and conditions ruled out

Z04         Encounter for examination and observation for other reasons

Z33.2      Encounter for elective termination of pregnancy

Z31.81    Encounter for male factor infertility in female patient

Z31.83    Encounter for assisted reproductive fertility procedure cycle

Z31.84    Encounter for fertility preservation procedure

Z34         Encounter for supervision of normal pregnancy

Z39         Encounter for maternal postpartum care and examination

Z38         Liveborn infants according to place of birth and type of delivery

Z40         Encounter for prophylactic surgery

Z42         Encounter for plastic and reconstructive surgery following medical procedure or healed injury

Z51.0      Encounter for antineoplastic radiation therapy

Z51.1-     Encounter for antineoplastic chemotherapy and immunotherapy

Z52         Donors of organs and tissues

   Except: Z52.9, Donor of unspecified organ or tissue

Z76.1      Encounter for health supervision and care of foundling

Z76.2      Encounter for health supervision and care of other healthy infant and child

Z99.12    Encounter for respirator [ventilator] dependence during power failure



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