P02.7 ICD-10-CM Code: Newborn affected by chorioamnionitis

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for P02.7 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 P02.7 itself; “inherited from” names the category or block whose note applies here.

Coder workflow for P02.7

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

Before you code P02.7

1. P02.7 is not reportable as written. Select the more specific code beneath it that the documentation supports. Codes are reported to the highest level of specificity the classification provides (Guidelines I.B.2).

   ReviewP02.70, P02.78

   See the relationships section · Guide: How to choose an ICD-10-CM code →

Choose the right path

1. Does the documentation support one of the more specific codes beneath P02.7?
   Yes → Select that code and continue the checks below on its own page.
   No → P02.7 cannot be reported as written; query for the specificity its subcategory needs.

   ReviewP02.70, P02.78

2. Is the underlying (etiologic) condition the Code First note names documented?
   Yes → Sequence the underlying condition first, then P02.7.
   No → Continue; do not add an underlying condition the record does not document.

Consider P02.7. 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).

Official instructions as workflow

• Excludes2 — not part of P02.7(1 note)

  Coding workflow: The conditions named in this note are not included in P02.7. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

  CompareZ05

  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 P02.7. 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

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 P02.7 with…

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

The codes most likely to be picked instead of P02.7 — 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.

• P02.2— Specificity relationship (Review)

  Overlapping diagnoses in the same category.

  Overlapping codes in the same category — the documentation decides which is the more specific fit.

  What moves you there: A record that documents no more than “Newborn affected by other and unspecified morphological and functional abnormalities of placenta” takes P02.2; specificity in the record moves it back here.

  Full comparison: P02.7 vs P02.2 →

• 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: P02.7 vs Z05 →

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

• Not billable as written — a more specific code is required: P02.70, P02.78.

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

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).

P01.9 — Newborn affected by maternal complication of pregnancy, unspecified, P02.0 — Newborn affected by placenta previa, P02.1 — Newborn affected by other forms of placental separation and hemorrhage, P02.20 — Newborn affected by unspecified morphological and functional abnormalities of placenta, P02.29 — Newborn affected by other morphological and functional abnormalities of placenta, P02.3 — Newborn affected by placental transfusion syndromes, P02.4 — Newborn affected by prolapsed cord, P02.5 — Newborn affected by other compression of umbilical cord, P02.60 — Newborn affected by unspecified conditions of umbilical cord, P02.69 — Newborn affected by other conditions of umbilical cord, P02.70 — Newborn affected by fetal inflammatory response syndrome, P02.78 — Newborn affected by other conditions from chorioamnionitis, P02.8 — Newborn affected by other abnormalities of membranes, P02.9 — Newborn affected by abnormality of membranes, unspecified, P03.0 — Newborn affected by breech delivery and extraction, P03.1 — Newborn affected by other malpresentation, malposition and disproportion during labor and delivery, P03.2 — Newborn affected by forceps delivery, P03.3 — Newborn affected by delivery by vacuum extractor [ventouse], P03.4 — Newborn affected by Cesarean delivery, P03.5 — Newborn affected by precipitate delivery, +53 more

Contextual Map

Every relationship of P02.7 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

• P00-P96 — Chapter 16: Certain Conditions Originating in the Perinatal Period (P00-P96) (P00-P96)[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• P00-P04 — Newborn affected by maternal factors and by complications of pregnancy, labor, and delivery[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

Clinical classification (CCSR)

• PNL010 — Newborn affected by maternal conditions or complications of labor/delivery[CCSR]— AHRQ CCSR for ICD-10-CM Diagnoses (HCUP)

Nearest codes (16)

• P02 — Newborn affected by complications of placenta, cord and membranes[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• P02.0 — Newborn affected by placenta previa[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• P02.1 — Newborn affected by other forms of placental separation and hemorrhage[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• P02.2 — Newborn affected by other and unspecified morphological and functional abnormalities of placenta[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• P02.20 — Newborn affected by unspecified morphological and functional abnormalities of placenta[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• P02.29 — Newborn affected by other morphological and functional abnormalities of placenta[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• P02.3 — Newborn affected by placental transfusion syndromes[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• P02.4 — Newborn affected by prolapsed cord[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• and 8 more

Change history (4)

• FY2019 — Became a non-billable header[Change history]— CMS release files (code change ledger) · icd10cm-fy2019
• and 3 more

Common coding questions

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

Claim edits Official source data

CMS Definitions of Medicare Code Edits — v43.1 (April 2026) 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 P02.7 in its code family, with their registry titles.

• P02.3 — Newborn affected by placental transfusion syndromes
• P02.4 — Newborn affected by prolapsed cord
• P02.5 — Newborn affected by other compression of umbilical cord
• P02.6 — Newborn affected by other and unspecified conditions of umbilical cord
• P02.60 — Newborn affected by unspecified conditions of umbilical cord
• P02.69 — Newborn affected by other conditions of umbilical cord
• P02.70 — Newborn affected by fetal inflammatory response syndrome
• P02.78 — Newborn affected by other conditions from chorioamnionitis
• P02.8 — Newborn affected by other abnormalities of membranes
• P02.9 — Newborn affected by abnormality of membranes, unspecified

View all codes in the P02 family