P08.0 ICD-10-CM Code: Exceptionally large newborn baby

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for P08.0 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 P08.0 itself; “inherited from” names the category or block whose note applies here.

Coder workflow for P08.0

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

Before you code P08.0

1. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with P08.0. 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 P08.0’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.

   ReviewP70.1, P70.0

Consider P08.0. 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).

Official instructions as workflow

• Excludes1 — check before selecting P08.0(2 notes)

  Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with P08.0: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

  CompareP70.1, P70.0

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

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 (4)

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.

• Birth, weight, 4500 grams or more
• Excess, excessive, excessively, large, infant
• Heavy-for-dates NEC (infant) (4000g to 4499g), exceptionally (4500g or more)
• Large-for-dates NEC (infant) (4000g to 4499g), exceptionally (4500g or more)

Don’t confuse P08.0 with…

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

The codes most likely to be picked instead of P08.0 — 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.

• P70.1— 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 syndrome of infant of diabetic mother moves the case to P70.1; the two are not reported together unless documented as unrelated.

  Full comparison: P08.0 vs P70.1 →

• P70.0— 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 syndrome of infant of mother with gestational diabetes moves the case to P70.0; the two are not reported together unless documented as unrelated.

  Full comparison: P08.0 vs P70.0 →

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 P08.0 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: P08.1 — Other heavy for gestational age newborn.

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 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):PNL013 — Other specified and unspecified perinatal conditions (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 and unspecified perinatal conditions).

P08.1 — Other heavy for gestational age newborn, P08.21 — Post-term newborn, P08.22 — Prolonged gestation of newborn, P09 — Abnormal findings on neonatal screening, P09.1 — Abnormal findings on neonatal screening for inborn errors of metabolism, P09.2 — Abnormal findings on neonatal screening for congenital endocrine disease, P09.3 — Abnormal findings on neonatal screening for congenital hematologic disorders, P09.4 — Abnormal findings on neonatal screening for cystic fibrosis, P09.5 — Abnormal findings on neonatal screening for critical congenital heart disease, P09.6 — Abnormal findings on neonatal hearing screening, P09.8 — Other abnormal findings on neonatal screening, P09.9 — Abnormal findings on neonatal screening, unspecified, P22.1 — Transient tachypnea of newborn, P29.0 — Neonatal cardiac failure, P29.11 — Neonatal tachycardia, P29.12 — Neonatal bradycardia, P29.2 — Neonatal hypertension, P29.3 — Persistent fetal circulation, P29.30 — Pulmonary hypertension of newborn, P29.38 — Other persistent fetal circulation, +74 more

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main terms “Birth”, “Excess, excessive, excessively”, “Large-for-dates NEC”; these codes share that main term but sit in a different category of the Tabular List.

M26.07 — Excessive tuberosity of jaw (tuberosity of jaw), M26.32 — Excessive spacing of fully erupted teeth (spacing of fully erupted teeth), M26.37 — Excessive interocclusal distance of fully erupted teeth (interocclusal distance of fully erupted teeth), N47.8 — Other disorders of prepuce (foreskin), N62 — Hypertrophy of breast (development, breast), N92.0 — Excessive and frequent menstruation with regular cycle (menstruation), N92.1 — Excessive and frequent menstruation with irregular cycle (menstruation, with irregular cycle), O36.6 — Maternal care for excessive fetal growth (affecting management of pregnancy), O69.3 — Labor and delivery complicated by short cord (short, umbilical cord in labor or delivery), O92.6 — Galactorrhea (secretion, milk), P10.0 — Subdural hemorrhage due to birth injury (injury NOS, subdural hemorrhage), P10.1 — Cerebral hemorrhage due to birth injury (injury NOS, laceration, brain), P10.2 — Intraventricular hemorrhage due to birth injury (injury NOS, intraventricular hemorrhage), P10.3 — Subarachnoid hemorrhage due to birth injury (injury NOS, subarachnoid hemorrhage), P10.4 — Tentorial tear due to birth injury (injury NOS, tentorial tear), P10.8 — Other intracranial lacerations and hemorrhages due to birth injury (injury NOS, intracranial, laceration or hemorrhage, specified NEC), P10.9 — Unspecified intracranial laceration and hemorrhage due to birth injury (injury NOS, intracranial, laceration or hemorrhage), P11.1 — Other specified brain damage due to birth injury (injury NOS, cerebellum), P11.2 — Unspecified brain damage due to birth injury (injury NOS, brain), P11.3 — Birth injury to facial nerve (injury NOS, nerve, facial), +60 more

Contextual Map

Every relationship of P08.0 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 P08.0 with these 3 related codes in Claim Check

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
• P05-P08 — Disorders of newborn related to length of gestation and fetal growth[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

Excludes1

• P70.0 — Syndrome of infant of mother with gestational diabetes[Excludes1]: “syndrome of infant of mother with gestational diabetes (P70.0)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• P70.1 — Syndrome of infant of a diabetic mother[Excludes1]: “syndrome of infant of diabetic mother (P70.1)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Referenced by Excludes1 notes

• P08.1 — Other heavy for gestational age newborn[Excludes1]: “newborn with a birth weight of 4500 or more (P08.0)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Clinical classification (CCSR)

• PNL013 — Other specified and unspecified perinatal conditions[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

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

Index entries

• Birth, weight, 4500 grams or more[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Excess, excessive, excessively, large, infant[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Heavy-for-dates NEC (infant) (4000g to 4499g), exceptionally (4500g or more)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Large-for-dates NEC (infant) (4000g to 4499g), exceptionally (4500g or more)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes

• P08 — Disorders of newborn related to long gestation and high birth weight[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• P08.1 — Other heavy for gestational age newborn[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• P08.2 — Late newborn, not heavy for gestational age[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• P08.21 — Post-term newborn[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• P08.22 — Prolonged gestation of newborn[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

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

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 P08.0 in its code family, with their registry titles.

• P08 — Disorders of newborn related to long gestation and high birth weight
• P08.1 — Other heavy for gestational age newborn
• P08.2 — Late newborn, not heavy for gestational age
• P08.21 — Post-term newborn
• P08.22 — Prolonged gestation of newborn

View all codes in the P08 family