2025 Unspecified ICD-10-CM Codes - Page 59
The 2025 Unspecified ICD-10-CM Codes list includes 29,292 valid codes for situations where medical documentation does not provide enough detail to assign a more specific code. While coders are encouraged to use the most detailed diagnosis possible, unspecified codes are sometimes necessary to accurately reflect the patient’s condition when clinical information is incomplete. Proper use of these codes helps reduce claim denials, supports accurate billing, and ensures compliance with Medicare and payer guidelines. Documentation must clearly support the need for using an unspecified code.
- Acquired absence of limb (Z89)
- Acquired absence of organs, not elsewhere classified (Z90)
- Activity codes (Y93)
- Allergy status to drugs, medicaments and biological substanc
- Artificial opening status (Z93)
- Blood type (Z67)
- Carrier of infectious disease (Z22)
- Contact with and (suspected) exposure to communicable diseas
- Contaminated medical or biological substances (Y64)
- Counseling related to sexual attitude, behavior and orientat
- Donors of organs and tissues (Z52)
- Encounter for adjustment and management of implanted device
- Encounter for administrative examination (Z02)
- Encounter for antenatal screening of mother (Z36)
- Encounter for attention to artificial openings (Z43)
- Encounter for contraceptive management (Z30)
- Encounter for examination and observation for other reasons
- Encounter for fitting and adjustment of external prosthetic
- Encounter for fitting and adjustment of other devices (Z46)
- Encounter for observation and evaluation of newborn for susp
- Encounter for other prophylactic measures (Z29)
- Encounter for procedures for purposes other than remedying h
- Encounter for procreative management (Z31)
- Encounter for prophylactic surgery (Z40)
- Encounter for screening for infectious and parasitic disease
- Encounter for screening for malignant neoplasms (Z12)
- Encounter for screening for other diseases and disorders (Z1
- Encounter for supervision of normal pregnancy (Z34)
- External cause status (Y99)
- Failure in dosage during surgical and medical care (Y63)
- Failure of sterile precautions during surgical and medical c
- Family history of other specific disorders (Z83)
- Family history of primary malignant neoplasm (Z80)
- Immunization not carried out and underimmunization status (Z
- Liveborn infants according to place of birth and type of del
- Long term (current) drug therapy (Z79)
- Military operations (Y37)
- Occupational exposure to risk factors (Z57)
- Operations of war (Y36)
- Other and unspecified medical devices associated with advers
- Other medical procedures as the cause of abnormal reaction o
- Other postprocedural states (Z98)
- Other problems related to primary support group, including f
- Outcome of delivery (Z37)
- Personal history of certain other diseases (Z86)
- Personal history of malignant neoplasm (Z85)
- Personal history of medical treatment (Z92)
- Personal risk factors, not elsewhere classified (Z91)
- Persons encountering health services for other counseling an
- Persons encountering health services for specific procedures
- Place of occurrence of the external cause (Y92)
- Presence of cardiac and vascular implants and grafts (Z95)
- Presence of other devices (Z97)
- Presence of other functional implants (Z96)
- Problems related to care provider dependency (Z74)
- Problems related to education and literacy (Z55)
- Problems related to employment and unemployment (Z56)
- Problems related to housing and economic circumstances (Z59)
- Problems related to life management difficulty (Z73)
- Problems related to lifestyle (Z72)
- Problems related to medical facilities and other health care
- Problems related to other psychosocial circumstances (Z65)
- Problems related to social environment (Z60)
- Problems related to upbringing (Z62)
- Resistance to antimicrobial drugs (Z16)
- Retained foreign body fragments (Z18)
- Surgical operation and other surgical procedures as the caus
- Terrorism (Y38)
- Transplanted organ and tissue status (Z94)
- Unspecified misadventure during surgical and medical care (Y
- Weeks of gestation (Z3A)
Z89.019 - Acquired absence of unspecified thumb Billable
Z89.029 - Acquired absence of unspecified finger(s) Billable
Z89.119 - Acquired absence of unspecified hand Billable
Z89.129 - Acquired absence of unspecified wrist Billable
Z89.20 - Acquired absence of upper limb, unspecified level Non-Billable
Z89.201 - Acquired absence of right upper limb, unspecified level Billable
Z89.202 - Acquired absence of left upper limb, unspecified level Billable
Z89.209 - Acquired absence of unspecified upper limb, unspecified level Billable
Z89.219 - Acquired absence of unspecified upper limb below elbow Billable
Z89.229 - Acquired absence of unspecified upper limb above elbow Billable
Z89.239 - Acquired absence of unspecified shoulder Billable
Z89.419 - Acquired absence of unspecified great toe Billable
Z89.429 - Acquired absence of other toe(s), unspecified side Billable
Z89.439 - Acquired absence of unspecified foot Billable
Z89.449 - Acquired absence of unspecified ankle Billable
Z89.519 - Acquired absence of unspecified leg below knee Billable
Z89.529 - Acquired absence of unspecified knee Billable
Z89.619 - Acquired absence of unspecified leg above knee Billable
Z89.629 - Acquired absence of unspecified hip joint Billable
Z89.9 - Acquired absence of limb, unspecified Billable
Z90.10 - Acquired absence of unspecified breast and nipple Billable
Y93.9 - Activity, unspecified Billable
Z88.9 - Allergy status to unspecified drugs, medicaments and biological substances Billable
Z20.9 - Contact with and (suspected) exposure to unspecified communicable disease Billable
Y64.9 - Contaminated medical or biological substance administered by unspecified means Billable
Z52.00 - Unspecified blood donor Non-Billable
Z52.000 - Unspecified donor, whole blood Billable
Z52.001 - Unspecified donor, stem cells Billable
Z52.008 - Unspecified donor, other blood Billable
Z52.10 - Skin donor, unspecified Billable
Z52.20 - Bone donor, unspecified Billable
Z52.819 - Egg (Oocyte) donor, unspecified Billable
Z52.9 - Donor of unspecified organ or tissue Billable
Z02.9 - Encounter for administrative examinations, unspecified Billable
Z36.9 - Encounter for antenatal screening, unspecified Billable
Z43.9 - Encounter for attention to unspecified artificial opening Billable
Z04.9 - Encounter for examination and observation for unspecified reason Billable
Z44.00 - Encounter for fitting and adjustment of unspecified artificial arm Non-Billable
Z44.001 - Encounter for fitting and adjustment of unspecified right artificial arm Billable
Z44.002 - Encounter for fitting and adjustment of unspecified left artificial arm Billable
Z44.009 - Encounter for fitting and adjustment of unspecified artificial arm, unspecified arm Billable
Z44.019 - Encounter for fitting and adjustment of complete artificial arm, unspecified arm Billable
Z44.029 - Encounter for fitting and adjustment of partial artificial arm, unspecified arm Billable
Z44.10 - Encounter for fitting and adjustment of unspecified artificial leg Non-Billable
Z44.101 - Encounter for fitting and adjustment of unspecified right artificial leg Billable
Z44.102 - Encounter for fitting and adjustment of unspecified left artificial leg Billable
Z44.109 - Encounter for fitting and adjustment of unspecified artificial leg, unspecified leg Billable
Z44.119 - Encounter for fitting and adjustment of complete artificial leg, unspecified leg Billable
Z44.129 - Encounter for fitting and adjustment of partial artificial leg, unspecified leg Billable
Z44.20 - Encounter for fitting and adjustment of artificial eye, unspecified Billable
Z44.30 - Encounter for fitting and adjustment of external breast prosthesis, unspecified breast Billable
Z44.9 - Encounter for fitting and adjustment of unspecified external prosthetic device Billable
Z46.9 - Encounter for fitting and adjustment of unspecified device Billable
Z05.9 - Observation and evaluation of newborn for unspecified suspected condition ruled out Billable
Z29.9 - Encounter for prophylactic measures, unspecified Billable
Z41.9 - Encounter for procedure for purposes other than remedying health state, unspecified Billable
Z31.9 - Encounter for procreative management, unspecified Billable
Z11.9 - Encounter for screening for infectious and parasitic diseases, unspecified Billable
Z34.00 - Encounter for supervision of normal first pregnancy, unspecified trimester Billable
Z34.80 - Encounter for supervision of other normal pregnancy, unspecified trimester Billable
Z34.9 - Encounter for supervision of normal pregnancy, unspecified Non-Billable
Z34.90 - Encounter for supervision of normal pregnancy, unspecified, unspecified trimester Billable
Z34.91 - Encounter for supervision of normal pregnancy, unspecified, first trimester Billable
Z34.92 - Encounter for supervision of normal pregnancy, unspecified, second trimester Billable
Z34.93 - Encounter for supervision of normal pregnancy, unspecified, third trimester Billable
Y99.9 - Unspecified external cause status Billable
Y63.9 - Failure in dosage during unspecified surgical and medical care Billable
Y62.9 - Failure of sterile precautions during unspecified surgical and medical care Billable
Z83.719 - Family history of colon polyps, unspecified Billable
Z80.9 - Family history of malignant neoplasm, unspecified Billable
Z79.60 - Long term (current) use of unspecified immunomodulators and immunosuppressants Billable
Y37.00 - Military operations involving explosion of unspecified marine weapon Non-Billable
Y37.000 - Military operations involving explosion of unspecified marine weapon, military personnel Non-Billable
Y37.000A - Military operations involving explosion of unspecified marine weapon, military personnel, initial encounter Billable
Y37.000D - Military operations involving explosion of unspecified marine weapon, military personnel, subsequent encounter Billable
Y37.000S - Military operations involving explosion of unspecified marine weapon, military personnel, sequela Billable
Y37.001 - Military operations involving explosion of unspecified marine weapon, civilian Non-Billable
Y37.001A - Military operations involving explosion of unspecified marine weapon, civilian, initial encounter Billable
Y37.001D - Military operations involving explosion of unspecified marine weapon, civilian, subsequent encounter Billable
Y37.001S - Military operations involving explosion of unspecified marine weapon, civilian, sequela Billable
Y37.10 - Military operations involving unspecified destruction of aircraft Non-Billable
Y37.100 - Military operations involving unspecified destruction of aircraft, military personnel Non-Billable
Y37.100A - Military operations involving unspecified destruction of aircraft, military personnel, initial encounter Billable
Y37.100D - Military operations involving unspecified destruction of aircraft, military personnel, subsequent encounter Billable
Y37.100S - Military operations involving unspecified destruction of aircraft, military personnel, sequela Billable
Y37.101 - Military operations involving unspecified destruction of aircraft, civilian Non-Billable
Y37.101A - Military operations involving unspecified destruction of aircraft, civilian, initial encounter Billable
Y37.101D - Military operations involving unspecified destruction of aircraft, civilian, subsequent encounter Billable
Y37.101S - Military operations involving unspecified destruction of aircraft, civilian, sequela Billable
Y37.20 - Military operations involving unspecified explosion and fragments Non-Billable
Y37.200 - Military operations involving unspecified explosion and fragments, military personnel Non-Billable
Y37.200A - Military operations involving unspecified explosion and fragments, military personnel, initial encounter Billable
Y37.200D - Military operations involving unspecified explosion and fragments, military personnel, subsequent encounter Billable
Y37.200S - Military operations involving unspecified explosion and fragments, military personnel, sequela Billable
Y37.201 - Military operations involving unspecified explosion and fragments, civilian Non-Billable
Y37.201A - Military operations involving unspecified explosion and fragments, civilian, initial encounter Billable
Y37.201D - Military operations involving unspecified explosion and fragments, civilian, subsequent encounter Billable
Y37.201S - Military operations involving unspecified explosion and fragments, civilian, sequela Billable
Y37.30 - Military operations involving unspecified fire, conflagration and hot substance Non-Billable
Y37.300 - Military operations involving unspecified fire, conflagration and hot substance, military personnel Non-Billable
Y37.300A - Military operations involving unspecified fire, conflagration and hot substance, military personnel, initial encounter Billable
Y37.300D - Military operations involving unspecified fire, conflagration and hot substance, military personnel, subsequent encounter Billable
Y37.300S - Military operations involving unspecified fire, conflagration and hot substance, military personnel, sequela Billable
Y37.301 - Military operations involving unspecified fire, conflagration and hot substance, civilian Non-Billable
Y37.301A - Military operations involving unspecified fire, conflagration and hot substance, civilian, initial encounter Billable
Y37.301D - Military operations involving unspecified fire, conflagration and hot substance, civilian, subsequent encounter Billable
Y37.301S - Military operations involving unspecified fire, conflagration and hot substance, civilian, sequela Billable
Y37.50 - Military operations involving unspecified effect of nuclear weapon Non-Billable
Y37.500 - Military operations involving unspecified effect of nuclear weapon, military personnel Non-Billable
Y37.500A - Military operations involving unspecified effect of nuclear weapon, military personnel, initial encounter Billable
Y37.500D - Military operations involving unspecified effect of nuclear weapon, military personnel, subsequent encounter Billable
Y37.500S - Military operations involving unspecified effect of nuclear weapon, military personnel, sequela Billable
Y37.501 - Military operations involving unspecified effect of nuclear weapon, civilian Non-Billable
Y37.501A - Military operations involving unspecified effect of nuclear weapon, civilian, initial encounter Billable
Y37.501D - Military operations involving unspecified effect of nuclear weapon, civilian, subsequent encounter Billable
Y37.501S - Military operations involving unspecified effect of nuclear weapon, civilian, sequela Billable
Y37.9 - Other and unspecified military operations Non-Billable
Y37.90 - Military operations, unspecified Non-Billable
Y37.90XA - Military operations, unspecified, initial encounter Billable
Y37.90XD - Military operations, unspecified, subsequent encounter Billable
Y37.90XS - Military operations, unspecified, sequela Billable
Y37.91 - Military operations involving unspecified weapon of mass destruction [WMD] Non-Billable
Y37.91XA - Military operations involving unspecified weapon of mass destruction [WMD], initial encounter Billable
Y37.91XD - Military operations involving unspecified weapon of mass destruction [WMD], subsequent encounter Billable
Y37.91XS - Military operations involving unspecified weapon of mass destruction [WMD], sequela Billable
Z57.9 - Occupational exposure to unspecified risk factor Billable
Y36.101S - War operations involving unspecified destruction of aircraft, civilian, sequela Billable
Y36.20 - War operations involving unspecified explosion and fragments Non-Billable
Y36.200 - War operations involving unspecified explosion and fragments, military personnel Non-Billable
Y36.200A - War operations involving unspecified explosion and fragments, military personnel, initial encounter Billable
Y36.200D - War operations involving unspecified explosion and fragments, military personnel, subsequent encounter Billable
Y36.200S - War operations involving unspecified explosion and fragments, military personnel, sequela Billable
Y36.201 - War operations involving unspecified explosion and fragments, civilian Non-Billable
Y36.201A - War operations involving unspecified explosion and fragments, civilian, initial encounter Billable
Y36.201D - War operations involving unspecified explosion and fragments, civilian, subsequent encounter Billable
Y36.201S - War operations involving unspecified explosion and fragments, civilian, sequela Billable
Y36.30 - War operations involving unspecified fire, conflagration and hot substance Non-Billable
Y36.300 - War operations involving unspecified fire, conflagration and hot substance, military personnel Non-Billable
Y36.300A - War operations involving unspecified fire, conflagration and hot substance, military personnel, initial encounter Billable
Y36.300D - War operations involving unspecified fire, conflagration and hot substance, military personnel, subsequent encounter Billable
Y36.300S - War operations involving unspecified fire, conflagration and hot substance, military personnel, sequela Billable
Y36.301 - War operations involving unspecified fire, conflagration and hot substance, civilian Non-Billable
Y36.301A - War operations involving unspecified fire, conflagration and hot substance, civilian, initial encounter Billable
Y36.301D - War operations involving unspecified fire, conflagration and hot substance, civilian, subsequent encounter Billable
Y36.301S - War operations involving unspecified fire, conflagration and hot substance, civilian, sequela Billable
Y36.50 - War operations involving unspecified effect of nuclear weapon Non-Billable
Y36.500 - War operations involving unspecified effect of nuclear weapon, military personnel Non-Billable
Y36.500A - War operations involving unspecified effect of nuclear weapon, military personnel, initial encounter Billable
Y36.500D - War operations involving unspecified effect of nuclear weapon, military personnel, subsequent encounter Billable
Y36.500S - War operations involving unspecified effect of nuclear weapon, military personnel, sequela Billable
Y36.501 - War operations involving unspecified effect of nuclear weapon, civilian Non-Billable
Y36.501A - War operations involving unspecified effect of nuclear weapon, civilian, initial encounter Billable
Y36.501D - War operations involving unspecified effect of nuclear weapon, civilian, subsequent encounter Billable
Y36.501S - War operations involving unspecified effect of nuclear weapon, civilian, sequela Billable
Y36.89 - Unspecified war operations occurring after cessation of hostilities Non-Billable
Y36.890 - Unspecified war operations occurring after cessation of hostilities, military personnel Non-Billable
Y36.890A - Unspecified war operations occurring after cessation of hostilities, military personnel, initial encounter Billable
Y36.890D - Unspecified war operations occurring after cessation of hostilities, military personnel, subsequent encounter Billable
Y36.890S - Unspecified war operations occurring after cessation of hostilities, military personnel, sequela Billable
Y36.891 - Unspecified war operations occurring after cessation of hostilities, civilian Non-Billable
Y36.891A - Unspecified war operations occurring after cessation of hostilities, civilian, initial encounter Billable
Y36.891D - Unspecified war operations occurring after cessation of hostilities, civilian, subsequent encounter Billable
Y36.891S - Unspecified war operations occurring after cessation of hostilities, civilian, sequela Billable
Y36.9 - Other and unspecified war operations Non-Billable
Y36.90 - War operations, unspecified Non-Billable
Y36.90XA - War operations, unspecified, initial encounter Billable
Y36.90XD - War operations, unspecified, subsequent encounter Billable
Y36.90XS - War operations, unspecified, sequela Billable
Y36.91 - War operations involving unspecified weapon of mass destruction [WMD] Non-Billable
Y36.91XA - War operations involving unspecified weapon of mass destruction [WMD], initial encounter Billable
Y36.91XD - War operations involving unspecified weapon of mass destruction [WMD], subsequent encounter Billable
Y36.91XS - War operations involving unspecified weapon of mass destruction [WMD], sequela Billable
Y84.9 - Medical procedure, unspecified as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure Billable
Z98.49 - Cataract extraction status, unspecified eye Billable
Z85.00 - Personal history of malignant neoplasm of unspecified digestive organ Billable
Z85.20 - Personal history of malignant neoplasm of unspecified respiratory organ Billable
Z85.40 - Personal history of malignant neoplasm of unspecified female genital organ Billable
Z85.45 - Personal history of malignant neoplasm of unspecified male genital organ Billable
Z85.50 - Personal history of malignant neoplasm of unspecified urinary tract organ Billable
Z85.819 - Personal history of malignant neoplasm of unspecified site of lip, oral cavity, and pharynx Billable
Z85.9 - Personal history of malignant neoplasm, unspecified Billable
Z92.859 - Personal history of cellular therapy, unspecified Billable
Z91.119 - Patient's noncompliance with dietary regimen due to unspecified reason Billable
Z91.199 - Patient's noncompliance with other medical treatment and regimen due to unspecified reason Billable
Z91.419 - Personal history of unspecified adult abuse Billable
Z91.849 - Unspecified risk for dental caries Billable
Z71.9 - Counseling, unspecified Billable
Z53.2 - Procedure and treatment not carried out because of patient's decision for other and unspecified reasons Non-Billable
Z53.20 - Procedure and treatment not carried out because of patient's decision for unspecified reasons Billable
Z53.9 - Procedure and treatment not carried out, unspecified reason Billable
Y92.00 - Unspecified non-institutional (private) residence as the place of occurrence of the external cause Non-Billable
Y92.000 - Kitchen of unspecified non-institutional (private) residence as the place of occurrence of the external cause Billable
Y92.001 - Dining room of unspecified non-institutional (private) residence as the place of occurrence of the external cause Billable
Y92.002 - Bathroom of unspecified non-institutional (private) residence as the place of occurrence of the external cause Billable
Y92.003 - Bedroom of unspecified non-institutional (private) residence as the place of occurrence of the external cause Billable
Y92.007 - Garden or yard of unspecified non-institutional (private) residence as the place of occurrence of the external cause Billable
Y92.008 - Other place in unspecified non-institutional (private) residence as the place of occurrence of the external cause Billable
Y92.009 - Unspecified place in unspecified non-institutional (private) residence as the place of occurrence of the external cause Billable
Y92.019 - Unspecified place in single-family (private) house as the place of occurrence of the external cause Billable
Y92.029 - Unspecified place in mobile home as the place of occurrence of the external cause Billable
Y92.039 - Unspecified place in apartment as the place of occurrence of the external cause Billable
Y92.049 - Unspecified place in boarding-house as the place of occurrence of the external cause Billable
Y92.099 - Unspecified place in other non-institutional residence as the place of occurrence of the external cause Billable
Y92.10 - Unspecified residential institution as the place of occurrence of the external cause Billable
Y92.119 - Unspecified place in children's home and orphanage as the place of occurrence of the external cause Billable
Y92.129 - Unspecified place in nursing home as the place of occurrence of the external cause Billable
Y92.139 - Unspecified place military base as the place of occurrence of the external cause Billable
Y92.149 - Unspecified place in prison as the place of occurrence of the external cause Billable
Y92.159 - Unspecified place in reform school as the place of occurrence of the external cause Billable
Y92.169 - Unspecified place in school dormitory as the place of occurrence of the external cause Billable
Y92.199 - Unspecified place in other specified residential institution as the place of occurrence of the external cause Billable
Y92.219 - Unspecified school as the place of occurrence of the external cause Billable
Y92.239 - Unspecified place in hospital as the place of occurrence of the external cause Billable
Y92.410 - Unspecified street and highway as the place of occurrence of the external cause Billable
Y92.9 - Unspecified place or not applicable Billable
Z95.9 - Presence of cardiac and vascular implant and graft, unspecified Billable
Z97.10 - Presence of artificial limb (complete) (partial), unspecified Billable
Z96.20 - Presence of otological and audiological implant, unspecified Billable
Z96.60 - Presence of unspecified orthopedic joint implant Billable
Z96.619 - Presence of unspecified artificial shoulder joint Billable
Z96.629 - Presence of unspecified artificial elbow joint Billable
Z96.639 - Presence of unspecified artificial wrist joint Billable
Z96.649 - Presence of unspecified artificial hip joint Billable
Z96.659 - Presence of unspecified artificial knee joint Billable
Z96.669 - Presence of unspecified artificial ankle joint Billable
Z96.9 - Presence of functional implant, unspecified Billable
Y83.9 - Surgical procedure, unspecified as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure Billable
Y38.8 - Terrorism involving other and unspecified means Non-Billable
Y38.80 - Terrorism involving unspecified means Non-Billable
Y38.80XA - Terrorism involving unspecified means, initial encounter Billable
Y38.80XD - Terrorism involving unspecified means, subsequent encounter Billable
Y38.80XS - Terrorism involving unspecified means, sequela Billable
Z94.9 - Transplanted organ and tissue status, unspecified Billable
Y69 - Unspecified misadventure during surgical and medical care Billable
Z3A.0 - Weeks of gestation of pregnancy, unspecified or less than 10 weeks Non-Billable