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Z99.11 ICD-10-CM Code: Dependence on respirator [ventilator] status

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Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Coding at a Glance

Tabular directives
1 inclusion term · 1 code-also instruction
Risk adjustment
CMS-HCC V28: 1 category · CMS-HCC V22 category 82

Billable · FY2027A valid, specific ICD-10-CM code, reportable for dates of service in FY2027.

What you need to know

Source: CMS/NCHS Official ICD-10-CM tabular notes, quoted. From the CMS/NCHS tabular list for the release in force. A note the category or block publishes applies to this code too; the Instructions section marks which is which.

Code alsoMay be needed with this code
  • any follow-up examination (Z08-Z09)
IncludesWhat this code covers
  • Ventilator status

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Inpatient Payment Groups (MS-DRG)

Potential MS-DRG participation — not a DRG assignment.

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v44, Appendix B.

  • MS-DRG 951 — OTHER FACTORS INFLUENCING HEALTH STATUS (MDC 23)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Risk Adjustment (CMS-HCC)

Payment categories this diagnosis maps to under CMS-HCC V28, payment year 2026.

  • HCC 211 — Respirator Dependence/Tracheostomy Status/Complications (supersedes HCC 212, HCC 213)

Other models: CMS-HCC V22 HCC 82

Risk scores depend on the enrollee's full accepted diagnosis set and segment; a category mapping alone does not determine payment.

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for Z99.11 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2027Effective: October 1, 2026

Trace:FY2027 changesChange historyRelease, file and checksum

Notes without a marker are published on Z99.11 itself; “inherited from” names the category or block whose note applies here.

Inclusion Terms

Alternative terms the tabular list files under this code.

  • Ventilator status

Code Also

Additional codes that may be required to fully describe the encounter.

  • any follow-up examination (Z08-Z09)

Source: inherited from Z77-Z99

Coder workflow for Z99.11

MedCoder structured workflow — derived from this code’s own official record

Before you code Z99.11

  1. Confirm the reason for the encounter this Z code records: a status — a condition, carrier state or sequela that may affect care, distinct from a current complication of it. Check whether the code may be reported as first-listed or principal — some Z codes are limited to one position — and do not report a history or status code for a condition documented as current. Z code categories and their reporting positions (Guidelines I.C.21.c.3, I.C.21.c.15).

    Guide: Status codes (Z codes) →

Documentation check

The provider’s diagnostic statement
Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).
The reason for the encounter
Whether the code records the encounter’s purpose, a status, or a history — and whether it may be first-listed (Guidelines I.C.21.c).

Official instructions as workflow

  • Code Also — related condition(1 note)

    Coding workflow: Review the related condition when both are documented and the instruction applies. A Code Also note does not fix sequencing; the order follows the circumstances of the encounter.

    See the official tabular notes · Guidelines I.A.17

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Coding context

Guidelines, coding notes, decision aids, relationships (with MS-DRG and CCSR classification), hierarchy, HCC, coverage and the context map: what a coder reaches for after the core. Each section names whether it is official source data, a MedCoder-derived relationship or MedCoder editorial.

Code Overview

Dependence on respirator [ventilator] status is a billable ICD-10-CM diagnosis code (Z99.11).

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

Official Coding Guidelines

Official source data — quoted verbatim from the CMS/NCHS Official Guidelines

Verbatim excerpts from the ICD-10-CM Official Guidelines for Coding and Reporting (CMS/NCHS) that govern this code.

Chapter 21: Factors influencing health status and contact with health services (Z00-Z99)

For encounters for weaning from a mechanical ventilator, assign a code from subcategory J96.1, Chronic respiratory failure, followed by code Z99.11, Dependence on respirator [ventilator] status.

Chapter 20: External Causes of Morbidity (V00-Y99)

1) Used with any code in the range of A00.0-T88.9, Z00-Z99 An external cause code may be used with any code in the range of A00.0-T88.9, Z00-Z99, classification that represents a health condition due to an external cause. Though they are most applicable to injuries, they are also valid for use with such things as infections or diseases due to an external source, and other health conditions, such as a heart attack that occurs during strenuous physical activity.

Chapter 21: Factors influencing health status and contact with health services (Z00-Z99)

Z99 Dependence on enabling machines and devices, not elsewhere classified Note: Categories Z89-Z90 and Z93-Z99 are for use only if there are no complications or malfunctions of the organ or tissue replaced, the amputation site or the equipment on which the patient is dependent.

Verify Before Coding

  • CC as a secondary diagnosis (FY2027). Can raise the stay's MS-DRG severity tier.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder-derived relationships — computed from published CMS and AHRQ datasets

Other codes that name Z99.11 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 2 Excludes2 notes: Z74 — Problems related to care provider dependency (via Z99.-), Z78 — Other specified health status (via Z99.-).

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

MS-DRG Grouper Relationships (FY2027)

Potential MS-DRG participation — not a DRG assignment.

FY2027 MS-DRG: CC — Complication or Comorbidity. Reported as a secondary diagnosis, this code raises the stay's MS-DRG severity tier — except when the principal diagnosis is one of 3 clinically related codes on its CMS exclusion list.

Named in the grouper logic of 1 MS-DRG: DRG 951 (MDC 23).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):FAC025 — Other specified status (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same clinical process (MS-DRG)

Acts as CC — raises the severity of other admissions. CMS groups these diagnoses into one MS-DRG principal-diagnosis exclusion process — a CC/MCC on this list never raises severity when the principal diagnosis is also on it.

J95.850 — Mechanical complication of respirator, Z99.12 — Encounter for respirator [ventilator] dependence during power failure

Same CMS-HCC risk category (V28)

CMS maps these diagnoses to the same Hierarchical Condition Category (Respirator Dependence/Tracheostomy Status/Complications) for risk-adjusted payment.

J95.00 — Unspecified tracheostomy complication, J95.01 — Hemorrhage from tracheostomy stoma, J95.02 — Infection of tracheostomy stoma, J95.03 — Malfunction of tracheostomy stoma, J95.04 — Tracheo-esophageal fistula following tracheostomy, J95.09 — Other tracheostomy complication, J95.850 — Mechanical complication of respirator, J95.851 — Ventilator associated pneumonia, J95.859 — Other complication of respirator [ventilator], Z43.0 — Encounter for attention to tracheostomy, Z93.0 — Tracheostomy status, Z99.12 — Encounter for respirator [ventilator] dependence during power failure

Related risk categories

These categories interact through CMS's HCC hierarchy — one can suppress the other's risk-adjustment weight when both are present on a claim.

Respiratory Arrest, Cardio-Respiratory Failure and Shock

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Other specified status).

Z91.A91 — Caregiver's noncompliance with patient's other medical treatment and regimen due to financial hardship, Z91.A98 — Caregiver's noncompliance with patient's other medical treatment and regimen for other reason, Z91.B — Personal risk factor of exposure to diethylstilbestrol, 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, Z93.50 — Unspecified cystostomy status, Z93.51 — Cutaneous-vesicostomy status, Z93.52 — Appendico-vesicostomy status, Z93.59 — Other cystostomy status, Z93.6 — Other artificial openings of urinary tract status, Z93.8 — Other artificial opening status, Z93.9 — Artificial opening status, unspecified, Z99.0 — Dependence on aspirator, Z99.2 — Dependence on renal dialysis, Z99.3 — Dependence on wheelchair, Z99.81 — Dependence on supplemental oxygen, Z99.89 — Dependence on other enabling machines and devices, +232 more

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main term “Status”; these codes share that main term but sit in a different category of the Tabular List.

Z97.8 — Presence of other specified devices (organ replacement, by artificial or mechanical device or prosthesis of, lung), Z98.0 — Intestinal bypass and anastomosis status (anastomosis), Z98.1 — Arthrodesis status (arthrodesis), Z98.2 — Presence of cerebrospinal fluid drainage device (shunt, ventricular), Z98.3 — Post therapeutic collapse of lung status (pneumothorax, therapeutic), Z98.4 — Cataract extraction status (cataract extraction), Z98.51 — Tubal ligation status (tubal ligation), Z98.52 — Vasectomy status (vasectomy), Z98.61 — Coronary angioplasty status (angioplasty, coronary artery), Z98.62 — Peripheral vascular angioplasty status (angioplasty), Z98.810 — Dental sealant status (dental, sealant), Z98.811 — Dental restoration status (dental, crown), Z98.818 — Other dental procedure status (dental), Z98.82 — Breast implant status (breast implant), Z98.83 — Filtering (vitreous) bleb after glaucoma surgery status (filteringbleb after glaucoma surgery), Z98.84 — Bariatric surgery status (obesity surgery), Z98.85 — Transplanted organ removal status (transplant, organ removed), Z98.86 — Personal history of breast implant removal (breast implant, removal), Z98.890 — Other specified postprocedural states (postsurgical NEC), Z98.891 — History of uterine scar from previous surgery (postoperative NEC, uterine scar), +256 more

Contextual Map

Every relationship of Z99.11 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Run Z99.11 with these 2 related codes in Claim Check

Hierarchy

Referenced by Excludes2 notes

Clinical classification (CCSR)

Risk adjustment (CMS-HCC)

  • HCC 211 — Respirator Dependence/Tracheostomy Status/Complications [CMS-HCC]: “Respirator Dependence/Tracheostomy Status/Complications — supersedes HCC 212 (Respiratory Arrest), HCC 213 (Cardio-Respiratory Failure and Shock)”— CMS-HCC V28 · 2026

MS-DRG Grouper

  • CC — Complication or Comorbidity [MS-DRG severity]: “As a secondary diagnosis this code can raise the stay's MS-DRG severity tier (CC).”— CMS MS-DRG Definitions Manual (Appendix C) · FY2027
  • DRG 951 — OTHER FACTORS INFLUENCING HEALTH STATUS[MS-DRG]: “OTHER FACTORS INFLUENCING HEALTH STATUS (MDC 23)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2027

MDC crossing

  • MDC 23 — Factors Influencing Health Status and Other Contacts with Health Services[MDC crossing]: “Factors Influencing Health Status and Other Contacts with Health Services — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs. 1,258 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2027

Index entries

  • Dependence (on) (syndrome), on, respirator[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027
  • Dependence (on) (syndrome), on, ventilator[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027
  • Status (post), ventilator[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027

Nearest codes (9)

Change history

  • FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Relevant guides

Reference

Index terms and tables, published questions and FAQ, every source behind this page with its release and checksum, the date-of-service check and the complete change history.

Indexed Clinical Terms (3)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data
CMS/CDC ICD-10-CM FY2027 tabular list, index and tables, effective October 1, 2026 Release, file and checksum · Publisher’s page
Coding guidelines Official source data
ICD-10-CM Official Guidelines for Coding and Reporting (FY2027), quoted by section Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v44.0 (October 2026) Release, file and checksum · Publisher’s page
Inpatient payment groups Official source data
CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v44 Release, file and checksum · Publisher’s page
Risk adjustment Official source data
2026 Mid-Year Final ICD-10 Mappings + Model Software (cms.gov/files/zip/2026-midyear-final-icd-10-mappings.zip, 2026-midyear-final-model-software.zip) — CMS-HCC V28, PY2026 mid-year final release Release, file and checksum · Publisher’s page
Change history and date-of-service validity Official source data
CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page
Comparisons, relationships and the contextual map MedCoder-derived relationship
Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears
Summary and FAQ answers MedCoder editorial explanation
Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 20, 2026 · All releases and sources

Labels on this page: Official source data · MedCoder-derived relationship · MedCoder editorial explanation. How to read the labels · All data sources and release dates · CMS coding rules

Cite this page

Reference this page in a research guide, syllabus or article. The release is included because code content changes each year.

MedCoder.ai. "Z99.11 — Dependence on respirator [ventilator] status." ICD-10-CM FY2027. https://medcoder.ai/icd10/code/z99.11-dependence-on-respirator-ventilator-status

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Dependence on respirator [ventilator] status

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027, and none are recorded for this code. Note changes are tracked from FY2027 only.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to Z99.11 in its code family, with their registry titles.

View all codes in the Z99 family