P37.5 ICD-10-CM Code: Neonatal candidiasis

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for P37.5 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 P37.5 itself; “inherited from” names the category or block whose note applies here.

Coder workflow for P37.5

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

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

• Excludes2 — not part of P37.5(14 notes)

  Coding workflow: The conditions named in this note are not included in P37.5. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

  CompareA50, P77, P78.3, A54.31, A33, Z21

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

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 (6)

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.

• Candidiasis, candidal, congenital
• Candidiasis, candidal, neonatal
• Infection, infected, infective (opportunistic), congenital, Candida (albicans)
• Moniliasis, neonatal
• Newborn (infant) (liveborn) (singleton), infection, candidal
• Thrush, newborn

Don’t confuse P37.5 with…

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

The codes most likely to be picked instead of P37.5 — 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.

• P37.9— 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 “Congenital infectious or parasitic disease, unspecified” takes P37.9; specificity in the record moves it back here.

  Full comparison: P37.5 vs P37.9 →

• A50— 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 congenital syphilis adds A50; it is not part of this code and both may be reported when both are documented.

  Full comparison: P37.5 vs A50 →

• A00— 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 infectious neonatal diarrhea adds A00; it is not part of this code and both may be reported when both are documented.

  Full comparison: P37.5 vs A00 →

• A09— 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 infectious neonatal diarrhea adds A09; it is not part of this code and both may be reported when both are documented.

  Full comparison: P37.5 vs A09 →

• P77— 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 necrotizing enterocolitis in newborn adds P77; it is not part of this code and both may be reported when both are documented.

  Full comparison: P37.5 vs P77 →

• P78.3— 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 noninfectious neonatal diarrhea adds P78.3; it is not part of this code and both may be reported when both are documented.

  Full comparison: P37.5 vs P78.3 →

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 P37.5 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: B37 — Candidiasis.

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

Referenced by 1 Excludes2 note: P00.2 — Newborn affected by maternal infectious and parasitic diseases (via P37.-).

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

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 794 (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):PNL009 — Perinatal infections (default); INF004 — Fungal infections.

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 categories (Perinatal infections, Fungal infections).

P36.39 — Sepsis of newborn due to other staphylococci, P36.4 — Sepsis of newborn due to Escherichia coli, P36.5 — Sepsis of newborn due to anaerobes, P36.8 — Other bacterial sepsis of newborn, P36.9 — Bacterial sepsis of newborn, unspecified, P37.0 — Congenital tuberculosis, P37.1 — Congenital toxoplasmosis, P37.2 — Neonatal (disseminated) listeriosis, P37.3 — Congenital falciparum malaria, P37.4 — Other congenital malaria, P37.8 — Other specified congenital infectious and parasitic diseases, P37.9 — Congenital infectious or parasitic disease, unspecified, P38.1 — Omphalitis with mild hemorrhage, P38.9 — Omphalitis without hemorrhage, P39.0 — Neonatal infective mastitis, P39.1 — Neonatal conjunctivitis and dacryocystitis, P39.2 — Intra-amniotic infection affecting newborn, not elsewhere classified, P39.3 — Neonatal urinary tract infection, P39.4 — Neonatal skin infection, P39.8 — Other specified infections specific to the perinatal period, +163 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.

P36.0 — Sepsis of newborn due to streptococcus, group B (sepsis, due to, Streptococcus, group B), P36.10 — Sepsis of newborn due to unspecified streptococci (sepsis, due to, Streptococcus), P36.19 — Sepsis of newborn due to other streptococci (sepsis, due to, Streptococcus, specified NEC), P36.2 — Sepsis of newborn due to Staphylococcus aureus (sepsis, due to, Staphylococcus, aureus), P36.30 — Sepsis of newborn due to unspecified staphylococci (sepsis, due to, Staphylococcus), P36.39 — Sepsis of newborn due to other staphylococci (sepsis, due to, Staphylococcus, specified NEC), P36.4 — Sepsis of newborn due to Escherichia coli (sepsis, due to, Escherichia coli), P36.5 — Sepsis of newborn due to anaerobes (sepsis, due to, anaerobes NEC), P36.8 — Other bacterial sepsis of newborn (sepsis, specified NEC), P36.9 — Bacterial sepsis of newborn, unspecified (sepsis), P38.1 — Omphalitis with mild hemorrhage (omphalitis, with mild hemorrhage), P38.9 — Omphalitis without hemorrhage (omphalitis), P39.0 — Neonatal infective mastitis (mastitis), P39.3 — Neonatal urinary tract infection (infection, urinary tract), P39.8 — Other specified infections specific to the perinatal period (infection, specified NEC), P39.9 — Infection specific to the perinatal period, unspecified (infection), P50.0 — Newborn affected by intrauterine (fetal) blood loss from vasa previa (affected by, vasa previa, from intrauterine blood loss), P50.1 — Newborn affected by intrauterine (fetal) blood loss from ruptured cord (affected by, intrauterineblood loss, due to, ruptured cord blood), P50.2 — Newborn affected by intrauterine (fetal) blood loss from placenta (affected by, intrauterineblood loss, due to, placenta), P50.3 — Newborn affected by hemorrhage into co-twin (affected by, intrauterineblood loss, due to, hemorrhage into, co-twin), +165 more

Contextual Map

Every relationship of P37.5 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 P37.5 with these 2 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
• P35-P39 — Infections specific to the perinatal period[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

Referenced by Excludes1 notes

• B37 — Candidiasis[Excludes1]: “neonatal candidiasis (P37.5)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Referenced by Excludes2 notes

• P00.2 — Newborn affected by maternal infectious and parasitic diseases[Excludes2](via P37.-): “infections specific to the perinatal period (P35-P39)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Clinical classification (CCSR)

• PNL009 — Perinatal infections[CCSR]— AHRQ CCSR for ICD-10-CM Diagnoses (HCUP)
• INF004 — Fungal infections[CCSR]— AHRQ CCSR for ICD-10-CM Diagnoses (HCUP)

MS-DRG Grouper

• DRG 794 — NEONATE WITH OTHER SIGNIFICANT PROBLEMS[MS-DRG]: “NEONATE WITH OTHER SIGNIFICANT PROBLEMS (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

• Candidiasis, candidal, congenital[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Candidiasis, candidal, neonatal[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Infection, infected, infective (opportunistic), congenital, Candida (albicans)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Moniliasis, neonatal[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Newborn (infant) (liveborn) (singleton), infection, candidal[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Thrush, newborn[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes

• P37 — Other congenital infectious and parasitic diseases[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• P37.0 — Congenital tuberculosis[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• P37.1 — Congenital toxoplasmosis[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• P37.2 — Neonatal (disseminated) listeriosis[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• P37.3 — Congenital falciparum malaria[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• P37.4 — Other congenital malaria[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• P37.8 — Other specified congenital infectious and parasitic diseases[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• P37.9 — Congenital infectious or parasitic disease, unspecified[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 P37.5 in its code family, with their registry titles.

• P37 — Other congenital infectious and parasitic diseases
• P37.0 — Congenital tuberculosis
• P37.1 — Congenital toxoplasmosis
• P37.2 — Neonatal (disseminated) listeriosis
• P37.3 — Congenital falciparum malaria
• P37.4 — Other congenital malaria
• P37.8 — Other specified congenital infectious and parasitic diseases
• P37.9 — Congenital infectious or parasitic disease, unspecified

View all codes in the P37 family