DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

Z99 Dependence on enabling machines and devices, not elsewhere classified

  • Header · not billable

Z99 is not billable. The category heads 7 billable codes in FY2027, grouped under 5 subdivisions.

Index → code

  • Status (post)ventilator → Z99.11
  • Shuntarterial-venous (dialysis) → Z99.2
  • Status (post)wheelchair confinement → Z99.3

Where it sits

  1. Chapter 21 Factors influencing health status and contact with health services (Z00-Z99)
  2. Z77-Z99 Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)
  3. Z99 Dependence on enabling machines and devices, not elsewhere classified
Billable codes
7
Subdivisions
5
CC / MCC codes
2 / 0
HCC V28 codes
2
New FY2027
0
Index entries
21

Codes in Z99

  1. Z99.0
    Dependence on aspirator
    BillableExempt
  2. Z99.1
    Dependence on respirator
    Header
    Inclusion terms 1

    Inclusion terms

    • Dependence on ventilator
  3. Z99.11
    Dependence on respirator [ventilator] status
    BillableCC211Exempt
    Inclusion terms 1

    Inclusion terms

    • Ventilator status
  4. Z99.12
    Encounter for respirator [ventilator] dependence during power failure
    BillableCC211Exempt
    Excludes1 1

    Excludes1

    • mechanical complication of respirator [ventilator] (J95.850) J95.850
  5. Z99.2
    Dependence on renal dialysis
    BillableExempt
    Inclusion terms 4, Excludes1 1, Excludes2 1

    Inclusion terms

    • Hemodialysis status
    • Peritoneal dialysis status
    • Presence of arteriovenous shunt for dialysis
    • Renal dialysis status NOS

    Excludes1

    • encounter for fitting and adjustment of dialysis catheter (Z49.0-) Z49.0

    Excludes2

    • noncompliance with renal dialysis (Z91.15-) Z91.15
  6. Z99.3
    Dependence on wheelchair
    BillableExempt
    Inclusion terms 1, Code first 3

    Inclusion terms

    • Wheelchair confinement status

    Code first

    • cause of dependence, such as:
    • muscular dystrophy (G71.0-) G71.0
    • obesity (E66.-) E66
  7. Z99.8
    Dependence on other enabling machines and devices
    Header
  8. Z99.81
    Dependence on supplemental oxygen
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Dependence on long-term oxygen
  9. Z99.89
    Dependence on other enabling machines and devices
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Dependence on machine or device NOS

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

Notes that also apply

Block Z77-Z99 instructions (Code also 1): printed on the block page.

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

Index entries

  • Status (post)ventilator → Z99.11
  • Admission (for)respirator [ventilator] use during power failure → Z99.12
  • Encounter (with health service) (for)respirator [ventilator] use during power failure → Z99.12
  • Dialysis (intermittent) (treatment)renal (hemodialysis) (peritoneal), status → Z99.2
  • Presence (of)arterial-venous shunt (dialysis) → Z99.2
  • Shuntarterial-venous (dialysis) → Z99.2
  • Status (post)dialysis (hemodialysis) (peritoneal) → Z99.2
  • Status (post)renal dialysis (hemodialysis) (peritoneal) → Z99.2
  • Status (post)wheelchair confinement → Z99.3
  • Dependence (on) (syndrome)oxygen (long-term) (supplemental) → Z99.81
  • Dependence (on) (syndrome)supplemental oxygen → Z99.81
  • Dependence (on) (syndrome)onaspirator → Z99.0
  • Dependence (on) (syndrome)onrespirator → Z99.11
  • Dependence (on) (syndrome)onventilator → Z99.11
  • Dependence (on) (syndrome)onrenal dialysis (hemodialysis) (peritoneal) → Z99.2
  • Fistula (cutaneous)arteriovenous (acquired) (nonruptured)surgically created (for dialysis) → Z99.2
  • Status (post)shuntarteriovenous (for dialysis) → Z99.2
  • Dependence (on) (syndrome)onwheelchair → Z99.3
  • Dependence (on) (syndrome)onmachine → Z99.89
  • Dependence (on) (syndrome)onmachineenabling NEC → Z99.89
  • Dependence (on) (syndrome)onmachinespecified type NEC → Z99.89

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy