Z52.001 ICD-10-CM Code: Unspecified donor, stem cells

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for Z52.001 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2026Effective: October 1, 2025

Notes without a marker are published on Z52.001 itself; “inherited from” names the category or block whose note applies here.

Coder workflow for Z52.001

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

Before you code Z52.001

1. Unspecified does not mean incorrect. When the record gives no greater specificity, Z52.001 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).

   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 →

3. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with Z52.001. Excludes1 conditions are not reported together with this code unless the record shows they are unrelated (Guidelines I.A.12.a).

   See the official tabular notes

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 — Z52.001 is appropriate when the documentation goes no further.
2. Does the documentation support a condition named in Z52.001’s Excludes1 note?
   Yes → Do not simply proceed: review the excluded code. Both are reported only when the record shows the two conditions are unrelated.
   No → Continue.

   ReviewZ00.5

Consider Z52.001. 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

• Excludes1 — check before selecting Z52.001(2 notes)

  Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with Z52.001: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

  CompareZ00.5

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

• Excludes2 — not part of Z52.001(1 note)

  Coding workflow: The conditions named in this note are not included in Z52.001. 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 (1)

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.

• Donor (organ or tissue), blood (whole), stem cells

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 Z52.001 with…

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

The codes most likely to be picked instead of Z52.001 — 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.

• Z00.5— Excludes1 conflict (Excludes1 — generally not reported together)

  Not coded here — the tabular list excludes this pair for the same encounter.

  Not reported together with this code, except where the two conditions are documented as unrelated.

  What moves you there: Documentation of examination of potential donor moves the case to Z00.5; the two are not reported together unless documented as unrelated.

  Full comparison: Z52.001 vs Z00.5 →

• 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: Z52.001 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: Z52.001 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

• No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

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

Other codes that name Z52.001 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 1 Excludes1 note: Z40 — Encounter for prophylactic surgery (via Z52.-).

These codes’ tabular lists mark this diagnosis as mutually exclusive — not reported together unless the conditions are documented as unrelated.

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

FY2026 MS-DRG: not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity for that release.

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 category (CCSR)

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

Z18.2 — Retained plastic fragments, Z18.31 — Retained animal quills or spines, Z18.32 — Retained tooth, Z18.33 — Retained wood fragments, Z18.39 — Other retained organic fragments, Z18.81 — Retained glass fragments, Z18.83 — Retained stone or crystalline fragments, Z18.89 — Other specified retained foreign body fragments, Z18.9 — Retained foreign body fragments, unspecified material, Z52.000 — Unspecified donor, whole blood, Z52.008 — Unspecified donor, other blood, Z52.010 — Autologous donor, whole blood, Z52.011 — Autologous donor, stem cells, Z52.018 — Autologous donor, other blood, Z52.090 — Other blood donor, whole blood, Z52.091 — Other blood donor, stem cells, Z52.098 — Other blood donor, other blood, Z52.10 — Skin donor, unspecified, Z52.11 — Skin donor, autologous, Z52.19 — Skin donor, other, +232 more

Same Index main term, other category

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

Z00.5 — Encounter for examination of potential donor of organ and tissue

Contextual Map

Every relationship of Z52.001 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 Z52.001 with this related code in Claim Check

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

Referenced by Excludes1 notes

• Z40 — Encounter for prophylactic surgery[Excludes1](via Z52.-): “organ donations (Z52.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Clinical classification (CCSR)

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

MS-DRG Grouper

• 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 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

• Donor (organ or tissue), blood (whole), stem cells[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes (34)

• Z52 — Donors of organs and tissues[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z52.0 — Blood donor[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z52.00 — Unspecified blood donor[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z52.000 — Unspecified donor, whole blood[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z52.008 — Unspecified donor, other blood[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z52.01 — Autologous blood donor[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z52.010 — Autologous donor, whole blood[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• Z52.011 — Autologous donor, stem cells[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• and 26 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 Z52.001 in its code family, with their registry titles.

• Z52 — Donors of organs and tissues
• Z52.0 — Blood donor
• Z52.00 — Unspecified blood donor
• Z52.000 — Unspecified donor, whole blood
• Z52.008 — Unspecified donor, other blood
• Z52.01 — Autologous blood donor
• Z52.010 — Autologous donor, whole blood
• Z52.011 — Autologous donor, stem cells
• Z52.018 — Autologous donor, other blood
• Z52.09 — Other blood donor

View all codes in the Z52 family