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Z15.03 ICD-10-CM Code: Genetic susceptibility to malignant neoplasm of prostate

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

Coding at a Glance

Tabular directives
1 inclusion term · 1 Excludes1 · 2 use-additional codes · 1 code-first instruction

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.

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for Z15.03 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 Z15.03 itself; “inherited from” names the category or block whose note applies here.

Includes

Conditions the official ICD-10-CM tabular list includes under this code.

  • confirmed abnormal gene

Source: inherited from Z15

Excludes1 — Not Coded Here

Conditions generally not reported together with this code (Excludes1) -- an error unless the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Source: inherited from Z15

Code First

Underlying conditions that must be sequenced before this code.

  • Code first, if applicable, any current malignant neoplasm (C00-C75, C81-C96)

Source: inherited from Z15.0

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • Use additional code, if applicable, for any personal history of malignant neoplasm (Z85.-) inherited from Z15.0
  • Use additional code, if applicable, for any associated family history of the disease (Z80-Z84) inherited from Z15

Coder workflow for Z15.03

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

Before you code Z15.03

  1. 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 →

  2. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with Z15.03. 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 documentation support a condition named in Z15.03’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.
  2. Is the underlying (etiologic) condition the Code First note names documented?
    Yes → Sequence the underlying condition first, then Z15.03.
    No → Continue; do not add an underlying condition the record does not document.

Consider Z15.03. Then work the Use Additional Code note, and 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 underlying (etiologic) condition
Named in the Code First note; sequenced before this code when documented (Guidelines I.A.13).
The conditions the Use Additional Code note names
Reported with this code when documented; a conditional instruction (“if applicable”, “if known”) applies only when the record supports it.
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

  • Excludes1 — check before selecting Z15.03(1 note)

    Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with Z15.03: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

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

  • Code First — sequencing check(1 note)

    Coding workflow: Check whether the underlying or etiologic condition the note names is documented. When it is, sequence it before Z15.03. Do not add an underlying condition the record does not document.

    See the official tabular notes · Guidelines I.A.13

  • Use Additional Code — after identifying Z15.03(2 notes)

    Coding workflow: Check whether the documentation supports the additional code(s) the note names, and report them with Z15.03 when it does. Where the instruction is conditional (“if applicable”, “if known”), it applies only when the record documents the condition.

    ReviewZ85

    See the official tabular notes · Guidelines I.A.13

Coding decision scenarios

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

Documentation: Both the condition Z15.03 describes and a condition named in its Excludes1 note are documented for the same encounter.

Coding question: Can both codes be reported?

Path: Review the Excludes1 note and the excluded code, and look for a provider statement on whether the two conditions are related.

Reason: Excludes1 means the two are not coded together; the exception is when the record shows the conditions are unrelated to each other (Guidelines I.A.12.a).

Documentation: The underlying condition the Code First note names is documented alongside this condition.

Coding question: How are the two sequenced?

Path: Review the Code First note.

Reason: The underlying condition is sequenced first and the manifestation follows (Guidelines I.A.13).

Documentation: A condition the Use Additional Code note names is documented.

Coding question: Is a second code reported with Z15.03?

Path: Review the Use Additional Code note and the code it names.

Reason: The additional code is reported when the record documents the condition; a conditional instruction applies only when its condition is met (Guidelines I.A.13).

ReviewZ85

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.

Don’t confuse Z15.03 with…

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

The codes most likely to be picked instead of Z15.03 — 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.

  • Q90— 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 chromosomal anomalies moves the case to Q90; the two are not reported together unless documented as unrelated.

    Full comparison: Z15.03 vs Q90 →

  • Q99— 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 chromosomal anomalies moves the case to Q99; the two are not reported together unless documented as unrelated.

    Full comparison: Z15.03 vs Q99 →

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.

Code Overview

Genetic susceptibility to malignant neoplasm of prostate is a billable ICD-10-CM diagnosis code (Z15.03).

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

Indexed Clinical Terms (2)

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.

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.

Chapter 2: Neoplasms (C00-D49 )

See Section I.C.21. Factors influencing health status and contact with health services, Status, for information regarding Z15.0, codes for genetic susceptibility to cancer.

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

Z15 Genetic susceptibility to disease Genetic susceptibility indicates that a person has a gene that increases the risk of that person developing the disease.

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

Codes from category Z15 should generally not be used as principal or first-listed codes. If the patient has the condition to which he/she is susceptible, and that condition is the reason for the encounter, the code for the current condition should be sequenced first. If the patient is being seen for follow-up after completed treatment for this condition, and the condition no longer exists, a follow-up code should be sequenced first, followed by the appropriate personal history and genetic susceptibility codes. If the purpose of the encounter is genetic counseling associated with procreative management, code Z31.5, Encounter for genetic counseling, should be assigned as the first-listed code, followed by a code from category Z15. Additional codes should be assigned for any applicable family or personal history. Z16 Resistance to antimicrobial drugs This category indicates that a patient has a condition that is resistant to antimicrobial drug treatment. Sequence the infection code first. Z17 Estrogen, and other hormones and factors receptor status Z18 Retained foreign body fragments Z19 Hormone sensitivity malignancy status Z21 Asymptomatic HIV infection status This code indicates that a patient has tested positive for HIV but has manifested no signs or symptoms of the disease. Z22 Carrier of infectious disease Carrier status indicates that a person harbors the specific organisms of a disease without manifest symptoms and is capable of transmitting the infection. Z28.3 Underimmunization status

Decision Points

The directives on this code's own record, as a pre-claim checklist.

  1. Sequencing: 1 Code First instruction — the underlying condition is sequenced before this code when present. See the Code First notes
  2. 2 Use Additional Code instructions — report the named additional code(s) when the documentation supports them. See the Use Additional Code notes
  3. 1 Excludes1 entry — codes named there are generally not reported together with this code (Guidelines I.A.12.a). See the Excludes1 notes

Checklist rows are derived from this code's own official directives; the wording of each check is MedCoder editorial. The official notes themselves are in the sections each row links to.

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

Other codes that name Z15.03 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 Use Additional Code instruction: Z79.81 — Long term (current) use of agents affecting estrogen receptors and estrogen levels (via Z15.0.-).

These codes instruct coders to additionally report this code when it applies.

Referenced by 2 Code Also instructions: Q85.81 — PTEN hamartoma tumor syndrome (via Z15.0.-), QA1 — Genetic disorders associated with neoplasms, not elsewhere classified (via Z15.0.-).

These codes suggest coding this condition alongside when both are present.

MS-DRG Grouper Relationships (FY2027)

Potential MS-DRG participation — not a DRG assignment.

FY2027 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):FAC029 — Genetic susceptibility to disease.

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 (Genetic susceptibility to disease).

Z15.01 — Genetic susceptibility to malignant neoplasm of breast, Z15.02 — Genetic susceptibility to malignant neoplasm of ovary, Z15.04 — Genetic susceptibility to malignant neoplasm of endometrium, Z15.05 — Genetic susceptibility to malignant neoplasm of fallopian tube(s), Z15.060 — Genetic susceptibility to colorectal cancer, Z15.068 — Genetic susceptibility to other malignant neoplasm of digestive system, Z15.07 — Genetic susceptibility to malignant neoplasm of urinary tract, Z15.09 — Genetic susceptibility to other malignant neoplasm, Z15.1 — Genetic susceptibility to epilepsy and neurodevelopmental disorders, Z15.2 — Genetic susceptibility to obesity, Z15.3 — Genetic susceptibility to kidney disease, Z15.81 — Genetic susceptibility to multiple endocrine neoplasia [MEN], Z15.89 — Genetic susceptibility to other disease, Z17.0 — Estrogen receptor positive status [ER+], Z17.1 — Estrogen receptor negative status [ER-], Z17.21 — Progesterone receptor positive status, Z17.22 — Progesterone receptor negative status, Z17.31 — Human epidermal growth factor receptor 2 positive status, Z17.32 — Human epidermal growth factor receptor 2 negative status, Z17.410 — Hormone receptor positive with human epidermal growth factor receptor 2 positive status, +5 more

Same Index main term, other category

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

QA1.71 — Lynch syndrome (hereditary nonpolyposis colorectal cancer), Z14.01 — Asymptomatic hemophilia A carrier (carrier, hemophilia A), Z14.02 — Symptomatic hemophilia A carrier (carrier, hemophilia A, symptomatic), Z14.1 — Cystic fibrosis carrier (carrier, cystic fibrosis), Z14.8 — Genetic carrier of other disease (carrier, specified NEC)

Contextual Map

Every relationship of Z15.03 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 Z15.03 with these 3 related codes in Claim Check

Hierarchy

Referenced by Use Additional Code instructions

Referenced by Code Also instructions

Clinical classification (CCSR)

MS-DRG Grouper

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

  • Genetic, susceptibility to disease NEC, malignant neoplasm, prostate[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Susceptibility to disease, genetic, malignant neoplasm, prostate[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes (17)

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 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
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

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. "Z15.03 — Genetic susceptibility to malignant neoplasm of prostate." ICD-10-CM FY2027. https://medcoder.ai/icd10/code/z15.03-genetic-susceptibility-to-malignant-neoplasm-of-prostate

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Genetic susceptibility to malignant neoplasm of prostate

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 Z15.03 in its code family, with their registry titles.

View all codes in the Z15 family