ICD-10 Chapter XXI: Factors influencing health status and contact with health services
| Chapter | Block | Title |
|---|---|---|
| I | A00–B99 | Certain infectious and parasitic diseases |
| II | C00–D48 | Neoplasms |
| III | D50–D89 | Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism |
| IV | E00–E90 | Endocrine, nutritional and metabolic diseases |
| V | F00–F99 | Mental and behavioural disorders |
| VI | G00–G99 | Diseases of the nervous system |
| VII | H00–H59 | Diseases of the eye and adnexa |
| VIII | H60–H95 | Diseases of the ear and mastoid process |
| IX | I00–I99 | Diseases of the circulatory system |
| X | J00–J99 | Diseases of the respiratory system |
| XI | K00–K93 | Diseases of the digestive system |
| XII | L00–L99 | Diseases of the skin and subcutaneous tissue |
| XIII | M00–M99 | Diseases of the musculoskeletal system and connective tissue |
| XIV | N00–N99 | Diseases of the genitourinary system |
| XV | O00–O99 | Pregnancy, childbirth and the puerperium |
| XVI | P00–P96 | Certain conditions originating in the perinatal period |
| XVII | Q00–Q99 | Congenital malformations, deformations and chromosomal abnormalities |
| XVIII | R00–R99 | Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified |
| XIX | S00–T98 | Injury, poisoning and certain other consequences of external causes |
| XX | V01–Y98 | External causes of morbidity and mortality |
| XXI | Z00–Z99 | Factors influencing health status and contact with health services |
| XXII | U00–U99 | Codes for special purposes |
This is a shortened version of the twentieth-one chapter of the ICD-10: Factors influencing health status and contact with health services. It covers ICD codes Z00.0 to Z99.9. All versions of the ICD-10, including the most recent one (2019), can be browsed freely on the website of the World Health Organisation (WHO). The ICD-10 can also be downloaded in PDF-form.
During some health encounters it may not be appropriate to use a code from Chapters I-XIX. As such codes from this chapter can be used in the primary diagnosis field when they represent the reason for which the encounter has taken place. Situations where this may be appropriate include: when a patient receives limited care or service for an ongoing condition (for example a patient in remission undergoing maintenance chemotherapy); to donate an organ and/or tissue; to receive prophylactic immunization; to discuss a problem other than a disease or injury; and for a situation or problem that influences the person's health status (that is not currently an illness or injury).
Should local coding rules permit, codes from Chapter XXI can also be used in addition to codes from other chapters. Instances might include the capturing of statuses and previously resolved conditions impacting upon the current encounter. For example, a patient with a history of colorectal cancer treated with a colectomy, now presenting with abdominal adhesions.
Persons encountering health services for examination and investigation (Z00–Z13)[edit]
- Z00 General examination and investigation of persons without complaint and reported diagnosis
- Z01 Other special examinations and investigations of persons without complaint or reported diagnosis
- Z02 Examination and encounter for administrative purposes
- Z03 Medical observation and evaluation for suspected diseases and conditions
- Z04 Examination and observation for other reasons
- Z08 Follow-up examination after treatment for malignant neoplasms
- Z09 Follow-up examination after treatment for conditions other than malignant neoplasms
- Z10 Routine general health check-up of defined subpopulation
- Z11 Special screening examination for infectious and parasitic diseases
- Z12 Special screening examination for neoplasms
- Z13 Special screening examination for other diseases and disorders
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- Z20 Contact with and exposure to communicable diseases
- Z21 Asymptomatic human immunodeficiency virus (HIV) infection status
- Z22 Carrier of infectious disease
- Z23 Need for immunization against single bacterial diseases
- Z24 Need for immunization against certain single viral diseases
- Z25 Need for immunization against other single viral diseases
- Z26 Need for immunization against other single infectious diseases
- Z27 Need for immunization against combinations of infectious diseases
- Z28 Immunization not carried out
- Z29 Need for other prophylactic measures
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- Z30 Contraceptive management
- Z30.0 General counselling and advice on contraception
- Z30.1 Insertion of (intrauterine) contraceptive device
- Z30.2 Sterilization
- Z30.3 Menstrual extraction
- Z30.4 Surveillance of contraceptive drugs
- Z30.5 Surveillance of (intrauterine) contraceptive device
- Z30.8 Other contraceptive management
- Z30.9 Contraceptive management, unspecified
- Z31 Procreative management
- Z32 Pregnancy examination and test
- Z33 Pregnant state, incidental
- Z34 Supervision of normal pregnancy
- Z35 Supervision of high-risk pregnancy
- Z36 Antenatal screening
- Z36.0 Antenatal screening for chromosomal anomalies
- Z36.1 Antenatal screening for raised alphafetoprotein level
- Z36.2 Other antenatal screening based on amniocentesis
- Z36.3 Antenatal screening for malformations using ultrasound and other physical methods
- Z36.4 Antenatal screening for fetal growth retardation using ultrasound and other physical methods
- Z36.5 Antenatal screening for isoimmunization
- Z36.8 Other antenatal screening
- Z36.9 Antenatal screening, unspecified
- Z37 Outcome of delivery
- Z38 Liveborn infants according to place of birth
- Z39 Postpartum care and examination
Persons encountering health services for specific procedures and health care (Z40–Z54)[edit]
- Z40 Prophylactic surgery
- Z41 Procedures for purposes other than remedying health state
- Z42 Follow-up care involving plastic surgery
- Z43 Attention to artificial openings
- Z44 Fitting and adjustment of external prosthetic device
- Z45 Adjustment and management of implanted device
- Z46 Fitting and adjustment of other devices
- Z47 Other orthopaedic follow-up care
- Z48 Other surgical follow-up care
- Z49 Care involving dialysis
- Z50 Care involving use of rehabilitation procedures
- Z51 Other medical care
- Z52 Donors of organs and tissues
- Z53 Persons encountering health services for specific procedures, not carried out
- Z54 Convalescence
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- Z55 Problems related to education and literacy
- Z56 Problems related to employment and unemployment
- Z57 Occupational exposure to risk-factors
- Z58 Problems related to physical environment
- Z59 Problems related to housing and economic circumstances
- Z60 Problems related to social environment
- Z61 Problems related to negative life events in childhood
- Z62 Other problems related to upbringing
- Z63 Other problems related to primary support group, including family circumstances
- Z64 Problems related to certain psychosocial circumstances
- Z65 Problems related to other psychosocial circumstances
Persons encountering health services in other circumstances (Z70–Z76)[edit]
- Z70 Counselling related to sexual attitude, behaviour and orientation.
- Z71 Persons encountering health services for other counselling and medical advice, not elsewhere classified.
- Z72 Problems related to lifestyle.
- Z73 Problems related to life-management difficulty.
- Z74 Problems related to care-provider dependency.
- Z75 Problems related to medical facilities and other health care.
- Z76 Persons encountering health services in other circumstances.
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- Z80 Family history of malignant neoplasm
- Z81 Family history of mental and behavioural disorders
- Z82 Family history of certain disabilities and chronic diseases leading to disablement
- Z83 Family history of other specific disorders
- Z84 Family history of other conditions
- Z85 Personal history of malignant neoplasm
- Z86 Personal history of certain other diseases
- Z87 Personal history of other diseases and conditions
- Z88 Personal history of allergy to drugs, medicaments and biological substances
- Z89 Acquired absence of limb
- Z90 Acquired absence of organs, not elsewhere classified
- Z91 Personal history of risk-factors, not elsewhere classified
- Z92 Personal history of medical treatment
- Z93 Artificial opening status
- Z93.0 Tracheostomy status
- Z93.1 Gastrostomy status
- Z93.2 Ileostomy status
- Z93.3 Colostomy status
- Z93.4 Other artificial openings of gastrointestinal tract status
- Z93.5 Cystostomy status
- Z93.6 Other artificial openings of urinary tract status
- Z93.8 Other artificial opening status
- Z93.9 Artificial opening status, unspecified
- Z94 Transplanted organ and tissue status
- Z95 Presence of cardiac and vascular implants and grafts
- Z96 Presence of other functional implants
- Z97 Presence of other devices
- Z98 Other postsurgical states
- Z99 Dependence on enabling machines and devices, not elsewhere classified
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