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