ICD-10 Code for Admission

The ICD-10-CM 2027 alphabetic index lists admission with the subterms below. More specific codes depend on the details documented, as listed in the official index (102 codes, 93 billable).

Index entries for Admission

adjustment (of)
- artificial
  - arm – Z44.00- (header)
    - complete – Z44.01- (header)
    - partial – Z44.02- (header)
  - eye – Z44.2- (header)
  - leg – Z44.10- (header)
    - complete – Z44.11- (header)
    - partial – Z44.12- (header)
- brain neuropacemaker – Z46.2
  - implanted – Z45.42
- breast
  - implant – Z45.81 (header)
  - prosthesis (external) – Z44.3 (header)
- colostomy belt – Z46.89
- contact lenses – Z46.0
- cystostomy device – Z46.6
- dental prosthesis – Z46.3
- device NEC
  - abdominal – Z46.89
  - implanted – Z45.89
    - cardiac – Z45.09
      - defibrillator (with synchronous cardiac pacemaker) – Z45.02
      - pacemaker (cardiac resynchronization therapy (CRT-P)) – Z45.018
        pulse generator – Z45.010
      - resynchronization therapy defibrillator (CRT-D) – Z45.02
    - hearing device – Z45.328
      - bone conduction – Z45.320
      - cochlear – Z45.321
    - infusion pump – Z45.1
    - nervous system – Z45.49
      - CSF drainage – Z45.41
      - hearing device – see Admission, adjustment, device, implanted, hearing device
      - neuropacemaker – Z45.42
      - visual substitution – Z45.31
    - specified NEC – Z45.89
    - vascular access – Z45.2
    - visual substitution – Z45.31
  - nervous system – Z46.2
    - implanted – see Admission, adjustment, device, implanted, nervous system
  - orthodontic – Z46.4
  - prosthetic – Z44.9
    - arm – see Admission, adjustment, artificial, arm
    - breast – Z44.3 (header)
    - dental – Z46.3
    - eye – Z44.2- (header)
    - leg – see Admission, adjustment, artificial, leg
    - specified type NEC – Z44.8
  - substitution
    - auditory – Z46.2
      - implanted – see Admission, adjustment, device, implanted, hearing device
    - nervous system – Z46.2
      - implanted – see Admission, adjustment, device, implanted, nervous system
    - visual – Z46.2
      - implanted – Z45.31
  - urinary – Z46.6
- hearing aid – Z46.1
  - implanted – see Admission, adjustment, device, implanted, hearing device
- ileostomy device – Z46.89
- intestinal appliance or device NEC – Z46.89
- neuropacemaker (brain) (peripheral nerve) (spinal cord) – Z46.2
  - implanted – Z45.42
- orthodontic device – Z46.4
- orthopedic (brace) (cast) (device) (shoes) – Z46.89
- pacemaker (cardiac resynchronization therapy (CRT-P))
  - cardiac – Z45.018
    - pulse generator – Z45.010
  - nervous system – Z46.2
    - implanted – Z45.42
- portacath (port-a-cath) – Z45.2
- prosthesis – Z44.9
  - arm – see Admission, adjustment, artificial, arm
  - breast – Z44.3 (header)
  - dental – Z46.3
  - eye – Z44.2- (header)
  - leg – see Admission, adjustment, artificial, leg
  - specified NEC – Z44.8
- spectacles – Z46.0
aftercare – Z51.89 – see also Aftercare
- postpartum
  - immediately after delivery – Z39.0
  - routine follow-up – Z39.2
- radiation therapy (antineoplastic) – Z51.0
- sepsis – Z51.A
attention to artificial opening (of) – Z43.9
- artificial vagina – Z43.7
- colostomy – Z43.3
- cystostomy – Z43.5
- enterostomy – Z43.4
- gastrostomy – Z43.1
- ileostomy – Z43.2
- jejunostomy – Z43.4
- nephrostomy – Z43.6
- specified site NEC – Z43.8
  - intestinal tract – Z43.4
  - urinary tract – Z43.6
- tracheostomy – Z43.0
- ureterostomy – Z43.6
- urethrostomy – Z43.6
breast augmentation or reduction – Z41.1
breast reconstruction following mastectomy – Z42.1
change of
- dressing (nonsurgical) – Z48.00
- neuropacemaker device (brain) (peripheral nerve) (spinal cord) – Z46.2
  - implanted – Z45.42
- surgical dressing – Z48.01
circumcision, ritual or routine (in absence of diagnosis) – Z41.2
clinical research investigation (control) (normal comparison) (participant) – Z00.6
contraceptive management – Z30.9
cosmetic surgery NEC – Z41.1
counseling – see also Counseling
- dietary – Z71.3
- gestational carrier – Z31.7
- HIV – Z71.7
- human immunodeficiency virus – Z71.7
- nonattending third party – Z71.0
- procreative management NEC – Z31.69
delivery, full-term, uncomplicated – O80
- cesarean, without indication – O82
desensitization to allergens – Z51.6
dietary surveillance and counseling – Z71.3
ear piercing – Z41.3
examination at health care facility (adult) – Z00.00 – see also Examination
- with abnormal findings – Z00.01
- clinical research investigation (control) (normal comparison) (participant) – Z00.6
- dental – Z01.20
  - with abnormal findings – Z01.21
- donor (potential) – Z00.5
- ear – Z01.10
  - with abnormal findings NEC – Z01.118
- eye – Z01.00
  - with abnormal findings – Z01.01
  - following failed vision screening – Z01.020
    - with abnormal findings – Z01.021
- general, specified reason NEC – Z00.8
- hearing – Z01.10
  - with abnormal findings NEC – Z01.118
  - infant or child (over 28 days old) – Z00.129
    - with abnormal findings – Z00.121
- postpartum checkup – Z39.2
- psychiatric (general) – Z00.8
  - requested by authority – Z04.6
- vision – Z01.00
  - with abnormal findings – Z01.01
  - following failed vision screening – Z01.020
    - with abnormal findings – Z01.021
  - infant or child (over 28 days old) – Z00.129
    - with abnormal findings – Z00.121
fitting (of)
- artificial
  - arm – see Admission, adjustment, artificial, arm
  - eye – Z44.2- (header)
  - leg – see Admission, adjustment, artificial, leg
- brain neuropacemaker – Z46.2
  - implanted – Z45.42
- breast prosthesis (external) – Z44.3 (header)
- colostomy belt – Z46.89
- contact lenses – Z46.0
- cystostomy device – Z46.6
- dental prosthesis – Z46.3
- dentures – Z46.3
- device NEC
  - abdominal – Z46.89
  - nervous system – Z46.2
    - implanted – see Admission, adjustment, device, implanted, nervous system
  - orthodontic – Z46.4
  - prosthetic – Z44.9
    - breast – Z44.3 (header)
    - dental – Z46.3
    - eye – Z44.2- (header)
  - substitution
    - auditory – Z46.2
      - implanted – see Admission, adjustment, device, implanted, hearing device
    - nervous system – Z46.2
      - implanted – see Admission, adjustment, device, implanted, nervous system
    - visual – Z46.2
      - implanted – Z45.31
- hearing aid – Z46.1
- ileostomy device – Z46.89
- intestinal appliance or device NEC – Z46.89
- neuropacemaker (brain) (peripheral nerve) (spinal cord) – Z46.2
  - implanted – Z45.42
- orthodontic device – Z46.4
- orthopedic device (brace) (cast) (shoes) – Z46.89
- prosthesis – Z44.9
  - arm – see Admission, adjustment, artificial, arm
  - breast – Z44.3 (header)
  - dental – Z46.3
  - eye – Z44.2- (header)
  - leg – see Admission, adjustment, artificial, leg
  - specified type NEC – Z44.8
- spectacles – Z46.0
follow-up examination – Z09
intrauterine device management – Z30.431
- initial prescription – Z30.014
mental health evaluation – Z00.8
- requested by authority – Z04.6
observation – see Observation
Papanicolaou smear, cervix – Z12.4
- for suspected malignant neoplasm – Z12.4
plastic and reconstructive surgery following medical procedure or healed injury NEC – Z42.8
plastic surgery, cosmetic NEC – Z41.1
postpartum observation
- immediately after delivery – Z39.0
- routine follow-up – Z39.2
poststerilization (for restoration) – Z31.0
- aftercare – Z31.42
procreative management – Z31.9
prophylactic (measure) – see also Encounter, prophylactic measures
- oophorectomy for persons without known genetic/ familial risk factors – Z40.81
- organ removal – Z40.00
  - breast – Z40.01
  - fallopian tube (s) – Z40.03
    - for persons without known genetic/familial risk factors – Z40.82
  - ovary (s) – Z40.02
    - for persons without known genetic/familial risk factors – Z40.81
  - specified organ NEC – Z40.09
  - testes – Z40.09
- salpingectomy for persons without known genetic/ familial risk factors – Z40.82
- vaccination – Z23
psychiatric examination (general) – Z00.8
- requested by authority – Z04.6
radiation therapy (antineoplastic) – Z51.0
reconstructive surgery following medical procedure or healed injury NEC – Z42.8
removal of
- cystostomy catheter – Z43.5
- drains – Z48.03
- dressing (nonsurgical) – Z48.00
- implantable subdermal contraceptive – Z30.46
- intrauterine contraceptive device – Z30.432
- neuropacemaker (brain) (peripheral nerve) (spinal cord) – Z46.2
  - implanted – Z45.42
- staples – Z48.02
- surgical dressing – Z48.01
- sutures – Z48.02
- ureteral stent – Z46.6
respirator [ventilator] use during power failure – Z99.12
restoration of organ continuity (poststerilization) – Z31.0
- aftercare – Z31.42
sensitivity test – see also Test, skin
- allergy NEC – Z01.82
- Mantoux – Z11.1
tuboplasty following previous sterilization – Z31.0
- aftercare – Z31.42
vasoplasty following previous sterilization – Z31.0
- aftercare – Z31.42
vision examination – Z01.00
- with abnormal findings – Z01.01
- following failed vision screening – Z01.020
  - with abnormal findings – Z01.021
- infant or child (over 28 days old) – Z00.129
  - with abnormal findings – Z00.121
waiting period for admission to other facility – Z75.1

How to choose the right code

Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.

Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.