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P24.31 ICD-10-CM Code: Neonatal aspiration of milk and regurgitated food with respiratory symptoms

Compare with another code for P24.31Check 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
3 inclusion terms · 1 use-additional code

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, and is marked with where it comes from.

Use additional codeReport with this code when documented
  • Use additional code to identify any secondary pulmonary hypertension, if applicable (I27.2-)
IncludesWhat this code covers
  • aspiration in utero and during delivery (from P24)
  • Neonatal aspiration of milk and regurgitated food with pneumonia
  • Neonatal aspiration of milk and regurgitated food with pneumonitis

Where it sits Source: CMS/NCHS

Under:Chapter 16: Certain Conditions Originating in the Perinatal PeriodP19-P29 Respiratory and cardiovascular disorders specific to the perinatal periodP24 Neonatal aspirationP24.3 Neonatal aspiration of milk and regurgitated food

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.

  • MS-DRG 791 — PREMATURITY WITH MAJOR PROBLEMS (MDC 15)
  • MS-DRG 793 — FULL TERM NEONATE WITH MAJOR PROBLEMS (MDC 15)

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 P24.31 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 P24.31 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.

  • aspiration in utero and during delivery

Source: inherited from P24

Inclusion Terms

Alternative terms the tabular list files under this code.

  • Neonatal aspiration of milk and regurgitated food with pneumonia
  • Neonatal aspiration of milk and regurgitated food with pneumonitis

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • Use additional code to identify any secondary pulmonary hypertension, if applicable (I27.2-)

Coder workflow for P24.31

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

Before you code P24.31

  1. P24.31’s title joins a condition with an associated condition or complication. Confirm each component is documented. Where the classification presumes the link through the “with” convention, only a provider statement that the conditions are unrelated defeats it. A combination code is assigned only when it fully identifies the documented conditions; a required second code for the stage, type or manifestation is still reported when the notes ask for it (Guidelines I.B.9, I.A.15).

    Guide: Combination codes →

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 associated condition or complication
Whether the associated condition the title names is documented; the “with” convention presumes some links, and a provider statement that the conditions are unrelated defeats it (Guidelines I.A.15).
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.

Official instructions as workflow

  • Use Additional Code — after identifying P24.31(1 note)

    Coding workflow: Check whether the documentation supports the additional code(s) the note names, and report them with P24.31 when it does. Where the instruction is conditional (“if applicable”, “if known”), it applies only when the record documents the condition.

    ReviewI27.2

    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: Only one of the components this code’s title joins is documented.

Coding question: Is P24.31 supported?

Path: Review the code for the documented component on its own.

Reason: A combination code is assigned only when it fully identifies the documented conditions; otherwise the documented component takes its own code (Guidelines I.B.9).

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

Coding question: Is a second code reported with P24.31?

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).

ReviewI27.2

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.

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

Neonatal aspiration of milk and regurgitated food with respiratory symptoms is a billable ICD-10-CM diagnosis code (P24.31).

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

  • MCC as a secondary diagnosis (FY2027). Can raise the stay's MS-DRG severity tier.

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

Other codes that name P24.31 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 3 Excludes1 notes across 2 chapters: J18 — Pneumonia, unspecified organism (via P24.-), J69 — Pneumonitis due to solids and liquids (via P24.-), P23 — Congenital pneumonia (via P24.-).

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

Referenced by 10 Excludes2 notes: J09 — Influenza due to certain identified influenza viruses (via P24.-), J09-J18 — Influenza and pneumonia (J09-J18) (via P24.-), J10 — Influenza due to other identified influenza virus (via P24.-), J11 — Influenza due to unidentified influenza virus (via P24.-), J12 — Viral pneumonia, not elsewhere classified (via P24.-), J13 — Pneumonia due to Streptococcus pneumoniae (via P24.-), J14 — Pneumonia due to Hemophilus influenzae (via P24.-), J15 — Bacterial pneumonia, not elsewhere classified (via P24.-), J16 — Pneumonia due to other infectious organisms, not elsewhere classified (via P24.-), J17 — Pneumonia in diseases classified elsewhere (via P24.-).

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

MS-DRG Grouper Relationships (FY2027)

Potential MS-DRG participation — not a DRG assignment.

FY2027 MS-DRG: MCC — Major Complication or Comorbidity. Reported as a secondary diagnosis, this code raises the stay's MS-DRG severity tier — except when the principal diagnosis is one of 68 clinically related codes on its CMS exclusion list.

Named in the grouper logic of 2 MS-DRGs: DRG 791 (MDC 15), DRG 793 (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):PNL006 — Respiratory perinatal condition (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 process (MS-DRG)

Acts as MCC — raises the severity of other admissions. CMS groups these diagnoses into one MS-DRG principal-diagnosis exclusion process — a CC/MCC on this list never raises severity when the principal diagnosis is also on it.

P23.6 — Congenital pneumonia due to other bacterial agents, P23.8 — Congenital pneumonia due to other organisms, P23.9 — Congenital pneumonia, unspecified, P24.00 — Meconium aspiration without respiratory symptoms, P24.01 — Meconium aspiration with respiratory symptoms, P24.10 — Neonatal aspiration of (clear) amniotic fluid and mucus without respiratory symptoms, P24.11 — Neonatal aspiration of (clear) amniotic fluid and mucus with respiratory symptoms, P24.20 — Neonatal aspiration of blood without respiratory symptoms, P24.21 — Neonatal aspiration of blood with respiratory symptoms, P24.30 — Neonatal aspiration of milk and regurgitated food without respiratory symptoms, P24.80 — Other neonatal aspiration without respiratory symptoms, P24.81 — Other neonatal aspiration with respiratory symptoms, P24.9 — Neonatal aspiration, unspecified, P25.0 — Interstitial emphysema originating in the perinatal period, P25.1 — Pneumothorax originating in the perinatal period, P25.2 — Pneumomediastinum originating in the perinatal period, P25.3 — Pneumopericardium originating in the perinatal period, P25.8 — Other conditions related to interstitial emphysema originating in the perinatal period, P26.0 — Tracheobronchial hemorrhage originating in the perinatal period, P26.1 — Massive pulmonary hemorrhage originating in the perinatal period, +47 more

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Respiratory perinatal condition).

P23.6 — Congenital pneumonia due to other bacterial agents, P23.8 — Congenital pneumonia due to other organisms, P23.9 — Congenital pneumonia, unspecified, P24.00 — Meconium aspiration without respiratory symptoms, P24.01 — Meconium aspiration with respiratory symptoms, P24.10 — Neonatal aspiration of (clear) amniotic fluid and mucus without respiratory symptoms, P24.11 — Neonatal aspiration of (clear) amniotic fluid and mucus with respiratory symptoms, P24.20 — Neonatal aspiration of blood without respiratory symptoms, P24.21 — Neonatal aspiration of blood with respiratory symptoms, P24.30 — Neonatal aspiration of milk and regurgitated food without respiratory symptoms, P24.80 — Other neonatal aspiration without respiratory symptoms, P24.81 — Other neonatal aspiration with respiratory symptoms, P24.9 — Neonatal aspiration, unspecified, P25.0 — Interstitial emphysema originating in the perinatal period, P25.1 — Pneumothorax originating in the perinatal period, P25.2 — Pneumomediastinum originating in the perinatal period, P25.3 — Pneumopericardium originating in the perinatal period, P25.8 — Other conditions related to interstitial emphysema originating in the perinatal period, P26.0 — Tracheobronchial hemorrhage originating in the perinatal period, P26.1 — Massive pulmonary hemorrhage originating in the perinatal period, +33 more

Same Index main term, other category

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

J84.117 — Desquamative interstitial pneumonia (desquamative interstitial), J84.178 — Other interstitial pulmonary diseases with fibrosis in diseases classified elsewhere (interstitial, lymphocytic), J84.2 — Lymphoid interstitial pneumonia (lymphoid interstitial), J84.89 — Other specified interstitial pulmonary diseases (organizing), J84.9 — Interstitial pulmonary disease, unspecified (interstitial), J85.0 — Gangrene and necrosis of lung (necrotic), J85.1 — Abscess of lung with pneumonia (with, lung abscess), J95.4 — Chemical pneumonitis due to anesthesia (aspiration, postprocedural), J95.851 — Ventilator associated pneumonia (ventilator associated), J95.89 — Other postprocedural complications and disorders of respiratory system, not elsewhere classified (resulting from a procedure), P23.0 — Congenital pneumonia due to viral agent (viral, virus, congenital), P23.1 — Congenital pneumonia due to Chlamydia (chlamydial, congenital), P23.2 — Congenital pneumonia due to staphylococcus (congenital, due to, Staphylococcus), P23.3 — Congenital pneumonia due to streptococcus, group B (congenital, due to, Streptococcus, group B), P23.4 — Congenital pneumonia due to Escherichia coli (congenital, due to, Escherichia coli), P23.5 — Congenital pneumonia due to Pseudomonas (congenital, due to, Pseudomonas), P23.6 — Congenital pneumonia due to other bacterial agents (congenital, due to, Mycoplasma), P23.8 — Congenital pneumonia due to other organisms (congenital, specified NEC), P23.9 — Congenital pneumonia, unspecified (neonatal), T79.8 — Other early complications of trauma (traumatic), +78 more

Contextual Map

Every relationship of P24.31 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 P24.31 with these 12 related codes in Claim Check

Hierarchy

Use Additional Code

Referenced by Excludes1 notes

Referenced by Excludes2 notes (10)

Clinical classification (CCSR)

MS-DRG Grouper

  • MCC — Major Complication or Comorbidity [MS-DRG severity]: “As a secondary diagnosis this code can raise the stay's MS-DRG severity tier (MCC).”— CMS MS-DRG Definitions Manual (Appendix C) · FY2027
  • DRG 791 — PREMATURITY WITH MAJOR PROBLEMS[MS-DRG]: “PREMATURITY WITH MAJOR PROBLEMS (MDC 15)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
  • DRG 793 — FULL TERM NEONATE WITH MAJOR PROBLEMS[MS-DRG]: “FULL TERM NEONATE WITH MAJOR PROBLEMS (MDC 15)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2027

MDC crossing

Index entries

  • Aspiration, milk (newborn) (without respiratory symptoms), with, pneumonia (pneumonitis)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027
  • Aspiration, milk (newborn) (without respiratory symptoms), with, respiratory symptoms[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027
  • Aspiration, vomitus, newborn (without respiratory symptoms), with, pneumonia (pneumonitis)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027
  • Aspiration, vomitus, newborn (without respiratory symptoms), with, respiratory symptoms[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved), aspiration, newborn, food (regurgitated)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved), aspiration, newborn, milk[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved), aspiration, newborn, stomach contents[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027

Nearest codes (16)

Change history

  • FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

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 (7)

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. "P24.31 — Neonatal aspiration of milk and regurgitated food with respiratory symptoms." ICD-10-CM FY2027. https://medcoder.ai/icd10/code/p24.31-neonatal-aspiration-of-milk-and-regurgitated-food-with-respiratory-symptoms

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Neonatal aspiration of milk and regurgitated food with respiratory symptoms

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 P24.31 in its code family, with their registry titles.

View all codes in the P24 family