Z Codes Only as Principal/First-Listed Diagnosis

Explore the detailed guidelines and applications of Appendix D: Z Codes Only as Principal/First-Listed Diagnosis. Understand when and how to use Z codes in your medical coding practices to ensure accurate and efficient documentation.
CodeDescription
Z00.00Encounter for general adult medical examination without abnormal findings
Z00.01Encounter for general adult medical examination with abnormal findings
Z00.110Health examination for newborn under 8 days old
Z00.111Health examination for newborn 8 to 28 days old
Z00.121Encounter for routine child health examination with abnormal findings
Z00.129Encounter for routine child health examination without abnormal findings
Z00.2Encounter for examination for period of rapid growth in childhood
Z00.3Encounter for examination for adolescent development state
Z00.5Encounter for examination of potential donor of organ and tissue
Z00.70Encounter for examination for period of delayed growth in childhood without abnormal findings
Z00.71Encounter for examination for period of delayed growth in childhood with abnormal findings
Z00.8Encounter for other general examination
Z01.00Encounter for examination of eyes and vision without abnormal findings
Z01.01Encounter for examination of eyes and vision with abnormal findings
Z01.020Encounter for examination of eyes and vision following failed vision screening without abnormal findings
Z01.021Encounter for examination of eyes and vision following failed vision screening with abnormal findings
Z01.10Encounter for examination of ears and hearing without abnormal findings
Z01.110Encounter for hearing examination following failed hearing screening
Z01.118Encounter for examination of ears and hearing with other abnormal findings
Z01.12Encounter for hearing conservation and treatment
Z01.20Encounter for dental examination and cleaning without abnormal findings
Z01.21Encounter for dental examination and cleaning with abnormal findings
Z01.30Encounter for examination of blood pressure without abnormal findings
Z01.31Encounter for examination of blood pressure with abnormal findings
Z01.411Encounter for gynecological examination (general) (routine) with abnormal findings
Z01.419Encounter for gynecological examination (general) (routine) without abnormal findings
Z01.42Encounter for cervical smear to confirm findings of recent normal smear following initial abnormal smear
Z01.810Encounter for preprocedural cardiovascular examination
Z01.811Encounter for preprocedural respiratory examination
Z01.812Encounter for preprocedural laboratory examination
Z01.818Encounter for other preprocedural examination
Z01.82Encounter for allergy testing
Z01.83Encounter for blood typing
Z01.84Encounter for antibody response examination
Z01.89Encounter for other specified special examinations
Z02.0Encounter for examination for admission to educational institution
Z02.1Encounter for pre-employment examination
Z02.2Encounter for examination for admission to residential institution
Z02.3Encounter for examination for recruitment to armed forces
Z02.4Encounter for examination for driving license
Z02.5Encounter for examination for participation in sport
Z02.6Encounter for examination for insurance purposes
Z02.71Encounter for disability determination
Z02.79Encounter for issue of other medical certificate
Z02.81Encounter for paternity testing
Z02.82Encounter for adoption services
Z02.83Encounter for blood-alcohol and blood-drug test
Z02.89Encounter for other administrative examinations
Z02.9Encounter for administrative examinations, unspecified
Z04.1Encounter for examination and observation following transport accident
Z04.2Encounter for examination and observation following work accident
Z04.3Encounter for examination and observation following other accident
Z04.41Encounter for examination and observation following alleged adult rape
Z04.42Encounter for examination and observation following alleged child rape
Z04.6Encounter for general psychiatric examination, requested by authority
Z04.71Encounter for examination and observation following alleged adult physical abuse
Z04.72Encounter for examination and observation following alleged child physical abuse
Z04.81Encounter for examination and observation of victim following forced sexual exploitation
Z04.82Encounter for examination and observation of victim following forced labor exploitation
Z04.89Encounter for examination and observation for other specified reasons
Z04.9Encounter for examination and observation for unspecified reason
Z31.81Encounter for male factor infertility in female patient
Z31.83Encounter for assisted reproductive fertility procedure cycle
Z31.84Encounter for fertility preservation procedure
Z33.2Encounter for elective termination of pregnancy
Z34.00Encounter for supervision of normal first pregnancy, unspecified trimester
Z34.01Encounter for supervision of normal first pregnancy, first trimester
Z34.02Encounter for supervision of normal first pregnancy, second trimester
Z34.03Encounter for supervision of normal first pregnancy, third trimester
Z34.80Encounter for supervision of other normal pregnancy, unspecified trimester
Z34.81Encounter for supervision of other normal pregnancy, first trimester
Z34.82Encounter for supervision of other normal pregnancy, second trimester
Z34.83Encounter for supervision of other normal pregnancy, third trimester
Z34.90Encounter for supervision of normal pregnancy, unspecified, unspecified trimester
Z34.91Encounter for supervision of normal pregnancy, unspecified, first trimester
Z34.92Encounter for supervision of normal pregnancy, unspecified, second trimester
Z34.93Encounter for supervision of normal pregnancy, unspecified, third trimester
Z38.00Single liveborn infant, delivered vaginally
Z38.01Single liveborn infant, delivered by cesarean
Z38.1Single liveborn infant, born outside hospital
Z38.2Single liveborn infant, unspecified as to place of birth
Z38.30Twin liveborn infant, delivered vaginally
Z38.31Twin liveborn infant, delivered by cesarean
Z38.4Twin liveborn infant, born outside hospital
Z38.5Twin liveborn infant, unspecified as to place of birth
Z38.61Triplet liveborn infant, delivered vaginally
Z38.62Triplet liveborn infant, delivered by cesarean
Z38.63Quadruplet liveborn infant, delivered vaginally
Z38.64Quadruplet liveborn infant, delivered by cesarean
Z38.65Quintuplet liveborn infant, delivered vaginally
Z38.66Quintuplet liveborn infant, delivered by cesarean
Z38.68Other multiple liveborn infant, delivered vaginally
Z38.69Other multiple liveborn infant, delivered by cesarean
Z38.7Other multiple liveborn infant, born outside hospital
Z38.8Other multiple liveborn infant, unspecified as to place of birth
Z39.0Encounter for care and examination of mother immediately after delivery
Z39.1Encounter for care and examination of lactating mother
Z39.2Encounter for routine postpartum follow-up
Z40.00Encounter for prophylactic removal of unspecified organ
Z40.01Encounter for prophylactic removal of breast
Z40.02Encounter for prophylactic removal of ovary(s)
Z40.03Encounter for prophylactic removal of fallopian tube(s)
Z40.09Encounter for prophylactic removal of other organ
Z40.8Encounter for other prophylactic surgery
Z40.9Encounter for prophylactic surgery, unspecified
Z42.1Encounter for breast reconstruction following mastectomy
Z42.8Encounter for other plastic and reconstructive surgery following medical procedure or healed injury
Z51.0Encounter for antineoplastic radiation therapy
Z51.11Encounter for antineoplastic chemotherapy
Z51.12Encounter for antineoplastic immunotherapy
Z52.000Unspecified donor, whole blood
Z52.001Unspecified donor, stem cells
Z52.008Unspecified donor, other blood
Z52.010Autologous donor, whole blood
Z52.011Autologous donor, stem cells
Z52.018Autologous donor, other blood
Z52.090Other blood donor, whole blood
Z52.091Other blood donor, stem cells
Z52.098Other blood donor, other blood
Z52.10Skin donor, unspecified
Z52.11Skin donor, autologous
Z52.19Skin donor, other
Z52.20Bone donor, unspecified
Z52.21Bone donor, autologous
Z52.29Bone donor, other
Z52.3Bone marrow donor
Z52.4Kidney donor
Z52.5Cornea donor
Z52.6Liver donor
Z52.810Egg (Oocyte) donor under age 35, anonymous recipient
Z52.811Egg (Oocyte) donor under age 35, designated recipient
Z52.812Egg (Oocyte) donor age 35 and over, anonymous recipient
Z52.813Egg (Oocyte) donor age 35 and over, designated recipient
Z52.819Egg (Oocyte) donor, unspecified
Z52.89Donor of other specified organs or tissues
Z76.1Encounter for health supervision and care of foundling
Z76.2Encounter for health supervision and care of other healthy infant and child
Z99.12Encounter for respirator [ventilator] dependence during power failure
Join our newsletter Join our newsletter