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P00.9 ICD-10-CM Code: Newborn affected by unspecified maternal condition

Compare with another code for P00.9Check this code on a claim

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

Coding at a Glance

Tabular directives
4 Excludes2 · 1 code-first instruction

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 firstSequence the underlying condition before this code
  • any current condition in newborn
Excludes2Not included here; may be reported together
  • encounter for observation of newborn for suspected diseases and conditions ruled out (Z05.-)
  • newborn affected by maternal complications of pregnancy (P01.-)
  • newborn affected by maternal endocrine and metabolic disorders (P70-P74)
  • newborn affected by noxious substances transmitted via placenta or breast milk (P04.-)

Where it sits Source: CMS/NCHS

Under:Chapter 16: Certain Conditions Originating in the Perinatal PeriodP00-P04 Newborn affected by maternal factors and by complications of pregnancy, labor, and deliveryP00 Newborn affected by maternal conditions that may be unrelated to present pregnancy

Most relevant related codes MedCoder-derived

Read off the official notes above and this code’s own position in the tabular list. Which to report is a documentation question; Compare shows the two side by side.

CompareCheck ClaimView Related Codes

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.

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 P00.9 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 P00.9 itself; “inherited from” names the category or block whose note applies here.

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Source: inherited from P00

Code First

Underlying conditions that must be sequenced before this code.

  • any current condition in newborn

Source: inherited from P00

Coder workflow for P00.9

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

Before you code P00.9

  1. Unspecified does not mean incorrect. When the record gives no greater specificity, P00.9 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).

    ReviewP00.0, P00.1, P00.2, P00.3, P00.4, P00.5, P00.6, P00.7

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

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 — P00.9 is appropriate when the documentation goes no further.

    ReviewP00.0, P00.1, P00.2, P00.3, P00.4, P00.5, P00.6, P00.7

  2. Is the underlying (etiologic) condition the Code First note names documented?
    Yes → Sequence the underlying condition first, then P00.9.
    No → Continue; do not add an underlying condition the record does not document.

Consider P00.9. 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 underlying (etiologic) condition
Named in the Code First note; sequenced before this code when documented (Guidelines I.A.13).
Any detail beyond this code’s title
What the record states that a more specific code would capture — or its absence, which itself supports the unspecified code.

Official instructions as workflow

  • Excludes2 — not part of P00.9(4 notes)

    Coding workflow: The conditions named in this note are not included in P00.9. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

    CompareZ05, P01, P04

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

  • 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 P00.9. Do not add an underlying condition the record does not document.

    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: The provider documents the condition in the terms of this code’s title and records no further detail.

Coding question: Is a more specific sibling code supportable?

Path: Review the specific siblings in this subcategory and what each requires the record to state.

Reason: A more specific code needs documentation of the distinguishing element; without it the unspecified code is appropriate, and a provider query is the route to specificity (Guidelines I.A.9.b, I.B.18).

ReviewP00.0, P00.1, P00.2, P00.3, P00.4, P00.5, P00.6, P00.7

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).

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 P00.9 with…

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

The codes most likely to be picked instead of P00.9 — 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.

  • Z05— 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 encounter for observation of newborn for suspected diseases and conditions ruled out adds Z05; it is not part of this code and both may be reported when both are documented.

    Full comparison: P00.9 vs Z05 →

  • P01— 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 newborn affected by maternal complications of pregnancy adds P01; it is not part of this code and both may be reported when both are documented.

    Full comparison: P00.9 vs P01 →

  • P70— 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 newborn affected by maternal endocrine and metabolic disorders adds P70; it is not part of this code and both may be reported when both are documented.

    Full comparison: P00.9 vs P70 →

  • P74— 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 newborn affected by maternal endocrine and metabolic disorders adds P74; it is not part of this code and both may be reported when both are documented.

    Full comparison: P00.9 vs P74 →

  • P04— 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 newborn affected by noxious substances transmitted via placenta or breast milk adds P04; it is not part of this code and both may be reported when both are documented.

    Full comparison: P00.9 vs P04 →

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.

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

Newborn affected by unspecified maternal condition is a billable ICD-10-CM diagnosis code (P00.9).

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

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-derived relationships — computed from published CMS and AHRQ datasets

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 795 (MDC 15).

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

Clinical classification (AHRQ CCSR):PNL010 — Newborn affected by maternal conditions or complications of labor/delivery (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 (Newborn affected by maternal conditions or complications of labor/delivery).

P00.1 — Newborn affected by maternal renal and urinary tract diseases, P00.2 — Newborn affected by maternal infectious and parasitic diseases, P00.3 — Newborn affected by other maternal circulatory and respiratory diseases, P00.4 — Newborn affected by maternal nutritional disorders, P00.5 — Newborn affected by maternal injury, P00.6 — Newborn affected by surgical procedure on mother, P00.7 — Newborn affected by other medical procedures on mother, not elsewhere classified, P00.81 — Newborn affected by periodontal disease in mother, P00.82 — Newborn affected by (positive) maternal group B streptococcus (GBS) colonization, P00.89 — Newborn affected by other maternal conditions, P01.0 — Newborn affected by incompetent cervix, P01.1 — Newborn affected by premature rupture of membranes, P01.2 — Newborn affected by oligohydramnios, P01.3 — Newborn affected by polyhydramnios, P01.4 — Newborn affected by ectopic pregnancy, P01.5 — Newborn affected by multiple pregnancy, P01.6 — Newborn affected by maternal death, P01.7 — Newborn affected by malpresentation before labor, P01.8 — Newborn affected by other maternal complications of pregnancy, P01.9 — Newborn affected by maternal complication of pregnancy, unspecified, +53 more

Same Index main term, other category

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

I42.4 — Endocardial fibroelastosis (affected by, cardiomyopathy, congenital), I42.89 — Other cardiomyopathies not elsewhere classified (affected by, cardiomyopathy), L70.4 — Infantile acne (acne), P01.0 — Newborn affected by incompetent cervix (affected by, maternal, incompetent cervix), P01.1 — Newborn affected by premature rupture of membranes (affected by, maternal, premature rupture of membranes), P01.2 — Newborn affected by oligohydramnios (affected by, maternal, oligohydramnios), P01.3 — Newborn affected by polyhydramnios (affected by, maternal, polyhydramnios), P01.4 — Newborn affected by ectopic pregnancy (affected by, maternal, ectopic pregnancy), P01.5 — Newborn affected by multiple pregnancy (affected by, maternal, multiple pregnancy), P01.6 — Newborn affected by maternal death (affected by, maternal, maternal death), P01.7 — Newborn affected by malpresentation before labor (affected by, maternal, malpresentation before labor), P01.8 — Newborn affected by other maternal complications of pregnancy (affected by, maternal, pregnancy, specified), P01.9 — Newborn affected by maternal complication of pregnancy, unspecified (affected by, maternal, pregnancy), P02.0 — Newborn affected by placenta previa (affected by, placenta previa), P02.1 — Newborn affected by other forms of placental separation and hemorrhage (affected by, hemorrhage), P02.20 — Newborn affected by unspecified morphological and functional abnormalities of placenta (affected by, placental, abnormality), P02.29 — Newborn affected by other morphological and functional abnormalities of placenta (affected by, placental, infarction), P02.3 — Newborn affected by placental transfusion syndromes (affected by, placental, transfusion syndromes), P02.4 — Newborn affected by prolapsed cord (affected by, prolapsed cord), P02.5 — Newborn affected by other compression of umbilical cord (affected by, umbilical cordaround neck), +137 more

Contextual Map

Every relationship of P00.9 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

Clinical classification (CCSR)

MS-DRG Grouper

MDC crossing

Index entries

  • Newborn (infant) (liveborn) (singleton), affected by, maternal (complication of) (use of), condition[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027
  • Newborn (infant) (liveborn) (singleton), affected by, maternal (complication of) (use of), disorder[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027

Nearest codes (13)

Change history (3)

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 (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.

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
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-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 28, 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. "P00.9 — Newborn affected by unspecified maternal condition." ICD-10-CM FY2027. https://medcoder.ai/icd10/code/p00.9-newborn-affected-by-unspecified-maternal-condition

Change history

  • FY2017 — October 1, 2016
    Description revised
    Newborn (suspected to be) affected by unspecified maternal condition → Newborn affected by unspecified maternal condition
    FY2017 changes
  • FY2017 — October 1, 2016
    Short description revised
    Newborn affected by unsp maternal condition → Newborn affected by unspecified maternal condition
    FY2017 changes
  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Newborn (suspected to be) affected by unspecified maternal condition

Nearest Codes in This Family

Official ICD-10-CM classifications closest to P00.9 in its code family, with their registry titles.

View all codes in the P00 family