DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Block · Chapter 21

Z40-Z53 Encounters for other specific health care (Z40-Z53)

Block Z40-Z53 groups 13 categories with 164 billable codes in FY2027.

Where it sits

  1. Chapter 21 Factors influencing health status and contact with health services (Z00-Z99)
  2. Z40-Z53 Encounters for other specific health care (Z40-Z53)

Neighbouring blocks

Categories
13
Billable codes
164
CC codes
7
MCC codes
0
HCC V28 codes
23
New FY2027
0

Categories in Z40-Z53

  • Z40

    Encounter for prophylactic surgery

    Opportunistic salpingectomy → Z40.82

    • 9 billable codes
  • Z41

    Encounter for procedures for purposes other than remedying health state

    Circumcision (in absence of medical indication) (ritual) (routine) → Z41.2

    • 5 billable codes
  • Z42

    Encounter for plastic and reconstructive surgery following medical procedure or healed injury

    Admission (for)breast reconstruction following mastectomy → Z42.1

    • 2 billable codes
  • Z43

    Encounter for attention to artificial openings

    Colostomyattention to → Z43.3

    • 10 billable codes
    • 1 CC
    • 9 with HCC
  • Z44

    Encounter for fitting and adjustment of external prosthetic device

    Management (of)prosthesis (external) → Z44.9

    • 26 billable codes
    • 9 with HCC
  • Z45

    Encounter for adjustment and management of implanted device

    Change(s) (in) (of)pacemaker → Z45.018

    • 19 billable codes
  • Z46

    Encounter for fitting and adjustment of other devices

    Orthodonticsfitting → Z46.4

    • 12 billable codes
  • Z47

    Orthopedic aftercare

    Aftercareorthopedic NEC → Z47.89

    • 8 billable codes
  • Z48

    Encounter for other postprocedural aftercare

    Wound check → Z48.0-

    • 23 billable codes
    • 6 CC
    • 5 with HCC
  • Z49

    Encounter for care involving renal dialysis

    Management (of)renal dialysis catheter → Z49.01

    • 4 billable codes
  • Z51

    Encounter for other aftercare and medical care

    Aftercare → Z51.89

    • 8 billable codes
  • Z52

    Donors of organs and tissues

    Donor (organ or tissue) → Z52.9

    • 26 billable codes
  • Z53

    Persons encountering health services for specific procedures and treatment, not carried out

    Canceled procedure (surgical) → Z53.9

    • 12 billable codes

Index main terms

  • Admission (for) → Z40, Z41, Z42, Z43, Z44, Z45, Z46, Z48, Z51 (147 entries)
  • Fitting (and adjustment) (of) → Z44, Z45, Z46 (57 entries)
  • Aftercare → Z45, Z46, Z47, Z48, Z51 (52 entries)
  • Encounter (with health service) (for) → Z41, Z42, Z44, Z45, Z46, Z47, Z51 (50 entries)
  • Removal (from) (of) → Z43, Z44, Z45, Z46, Z48 (35 entries)
  • Donor (organ or tissue) → Z52 (32 entries)
  • Attention (to) → Z43, Z48 (24 entries)
  • Procedure (surgical) → Z41, Z53 (16 entries)
  • Management (of) → Z44, Z45, Z49 (12 entries)
  • Canceled procedure (surgical) → Z53 (8 entries)
  • Prophylactic → Z40 (8 entries)
  • Change(s) (in) (of) → Z45, Z46, Z48 (5 entries)
  • Interrogation → Z45, Z46 (5 entries)
  • Refusal of → Z53 (5 entries)
  • Care (of) (for) (following) → Z51 (3 entries)

+28 more main terms; the search box finds them by word.

Block instructions

Inclusion terms

  • Categories Z40-Z53 are intended for use to indicate a reason for care. They may be used for patients who have already been treated for a disease or injury, but who are receiving aftercare or prophylactic care, or care to consolidate the treatment, or to deal with a residual state Z40 Z53

Excludes2

  • follow-up examination for medical surveillance after treatment (Z08-Z09) Z08 Z09

Notes that also apply

Chapter 21 instructions (Notes 3): printed on the chapter 21 page.