Z53.20 ICD-10-CM Code: Procedure and treatment not carried out because of patient's decision for unspecified reasons

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for Z53.20 in the official ICD-10-CM tabular list, quoted as published.

Notes without a marker are published on Z53.20 itself; “inherited from” names the category or block whose note applies here.

Coder workflow for Z53.20

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

Before you code Z53.20

1. Unspecified does not mean incorrect. When the record gives no greater specificity, Z53.20 may be the appropriate code. Check the record for detail that supports a more specific sibling. An unspecified code is for records that do not provide the detail a more specific code needs; a query, not an assumption, is the route to specificity (Guidelines I.A.9.b, I.B.18).

   ReviewZ53.21, Z53.29

   See the relationships section · Guide: Other vs unspecified (NEC vs NOS) →

2. Confirm the reason for the encounter this Z code records: the circumstance it records. 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, I.C.21.c.15).

   Guide: Z codes as principal or first-listed diagnosis →

Choose the right path

1. Does the record document the detail a more specific sibling code needs?
   Yes → Review the specific siblings in this subcategory.
   No → Continue — Z53.20 is appropriate when the documentation goes no further.

   ReviewZ53.21, Z53.29

Consider Z53.20. Then confirm the code is valid for the date of service in the Verify section.

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).

Any detail beyond this code’s title

What the record states that a more specific sibling code would capture — or its absence, which itself supports the unspecified code.

Official instructions as workflow

• Excludes2 — not part of Z53.20(1 note)

  Coding workflow: The conditions named in this note are not included in Z53.20. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

  See the official tabular notes · Guidelines I.A.12.b

Coding decision scenarios

Pattern scenarios for this code’s structure — decision rules, not clinical cases

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.

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.

• Canceled procedure (surgical), because of, patient's decision
• Procedure (surgical), not done, because of, patient's decision
• Refusal of, treatment (because of)

Official Coding Guidelines

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

Don’t confuse Z53.20 with…

MedCoder analysis — pairs from this code’s official notes, distinctions written by MedCoder

The codes most likely to be picked instead of Z53.20 — named in its own official notes, or sharing its laterality or encounter family — with what separates them and which documentation moves the case. Each links to the full comparison.

• Z08— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of follow-up examination for medical surveillance after treatment adds Z08; it is not part of this code and both may be reported when both are documented.

  Full comparison: Z53.20 vs Z08 →

• Z09— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of follow-up examination for medical surveillance after treatment adds Z09; it is not part of this code and both may be reported when both are documented.

  Full comparison: Z53.20 vs Z09 →

Relationships are read from this code's own official notes, its laterality siblings and its encounter family; the wording of each distinction is MedCoder editorial, and the documentation named in each “what moves you there” line is the official note phrase or sibling title itself. Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a.

Verify Before Coding

• Principal-diagnosis restriction. The Medicare Code Editor lists this code as unacceptable as a principal diagnosis: it describes a circumstance influencing health status rather than a current illness or injury being treated. It is valid as a secondary diagnosis.

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 structured relationships — computed from published CMS and AHRQ datasets

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

Not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity.

Named in the grouper logic of 2 MS-DRGs: DRG 795 (MDC 15), 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

Principal diagnosis restriction (Medicare Code Editor)

Not acceptable as a principal diagnosis on an inpatient claim.

Same clinical category (CCSR)

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

Z52.810 — Egg (Oocyte) donor under age 35, anonymous recipient, Z52.811 — Egg (Oocyte) donor under age 35, designated recipient, Z52.812 — Egg (Oocyte) donor age 35 and over, anonymous recipient, Z52.813 — Egg (Oocyte) donor age 35 and over, designated recipient, Z52.819 — Egg (Oocyte) donor, unspecified, Z52.89 — Donor of other specified organs or tissues, Z52.9 — Donor of unspecified organ or tissue, Z53.01 — Procedure and treatment not carried out due to patient smoking, Z53.09 — Procedure and treatment not carried out because of other contraindication, Z53.1 — Procedure and treatment not carried out because of patient's decision for reasons of belief and group pressure, Z53.21 — Procedure and treatment not carried out due to patient leaving prior to being seen by health care provider, Z53.29 — Procedure and treatment not carried out because of patient's decision for other reasons, Z53.31 — Laparoscopic surgical procedure converted to open procedure, Z53.32 — Thoracoscopic surgical procedure converted to open procedure, Z53.33 — Arthroscopic surgical procedure converted to open procedure, Z53.39 — Other specified procedure converted to open procedure, Z53.8 — Procedure and treatment not carried out for other reasons, Z53.9 — Procedure and treatment not carried out, unspecified reason, Z66 — Do not resuscitate, Z67.10 — Type A blood, Rh positive, +232 more

Same Index main term, other category

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

F50.89 — Other specified eating disorder (food, psychogenic), Z41.8 — Encounter for other procedures for purposes other than remedying health state (for purpose other than remedying health state, specified NEC), Z41.9 — Encounter for procedure for purposes other than remedying health state, unspecified (for purpose other than remedying health state)

Contextual Map

Every relationship of Z53.20 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.

Hierarchy

• Z00-Z99 — Chapter 21: Factors Influencing Health Status and Contact with Health Services (Z00-Z99) (Z00-Z99)[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z40-Z53 — Encounters for other specific health care[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

Clinical classification (CCSR)

• FAC025 — Other specified status[CCSR]— AHRQ CCSR for ICD-10-CM Diagnoses (HCUP)

MS-DRG Grouper

• DRG 795 — NORMAL NEWBORN[MS-DRG]: “NORMAL NEWBORN (MDC 15)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 951 — OTHER FACTORS INFLUENCING HEALTH STATUS[MS-DRG]: “OTHER FACTORS INFLUENCING HEALTH STATUS (MDC 23)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026

MDC crossing

• MDC 15 — Newborns and Other Neonates with Conditions Originating in Perinatal Period[MDC crossing]: “Newborns and Other Neonates with Conditions Originating in Perinatal Period — 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.”— CMS MS-DRG Definitions Manual · FY2026
• 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. 1,235 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2026

Index entries

• Canceled procedure (surgical), because of, patient's decision[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Procedure (surgical), not done, because of, patient's decision[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Refusal of, treatment (because of)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes (15)

• Z53 — Persons encountering health services for specific procedures and treatment, not carried out[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z53.0 — Procedure and treatment not carried out because of contraindication[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z53.01 — Procedure and treatment not carried out due to patient smoking[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z53.09 — Procedure and treatment not carried out because of other contraindication[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z53.1 — Procedure and treatment not carried out because of patient's decision for reasons of belief and group pressure[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z53.2 — Procedure and treatment not carried out because of patient's decision for other and unspecified reasons[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z53.21 — Procedure and treatment not carried out due to patient leaving prior to being seen by health care provider[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z53.29 — Procedure and treatment not carried out because of patient's decision for other reasons[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• and 7 more

Change history

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

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 FY2026 tabular list, index and tables, effective October 1, 2025 Release, file and checksum · Publisher’s page

Coding guidelines Official source data

ICD-10-CM Official Guidelines for Coding and Reporting (FY2026), quoted by section Release, file and checksum · Publisher’s page

Claim edits Official source data

CMS Definitions of Medicare Code Edits — v43.1 (April 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 — v43 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 structured 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 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.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

Nearest Codes in This Family

Official ICD-10-CM classifications closest to Z53.20 in its code family, with their registry titles.

• Z53.0 — Procedure and treatment not carried out because of contraindication
• Z53.01 — Procedure and treatment not carried out due to patient smoking
• Z53.09 — Procedure and treatment not carried out because of other contraindication
• Z53.1 — Procedure and treatment not carried out because of patient's decision for reasons of belief and group pressure
• Z53.2 — Procedure and treatment not carried out because of patient's decision for other and unspecified reasons
• Z53.21 — Procedure and treatment not carried out due to patient leaving prior to being seen by health care provider
• Z53.29 — Procedure and treatment not carried out because of patient's decision for other reasons
• Z53.3 — Procedure converted to open procedure
• Z53.31 — Laparoscopic surgical procedure converted to open procedure
• Z53.32 — Thoracoscopic surgical procedure converted to open procedure

View all codes in the Z53 family