ICDcodes.org
FY2027

P00.9 — Newborn affected by unspecified maternal condition

BillableUnspecified

Is P00.9 billable?

Yes, but P00.9 is an unspecified code. P00.9 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, P00.9 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting P00.9 — the more specific alternatives are listed below.

P00.9 at a glance

CodeP00.9
DescriptionNewborn affected by unspecified maternal condition
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Which MS-DRGs does P00.9 group to?

P00.9 sits in MDC 15 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

  • 795Normal Newbornmedical

How is P00.9 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to P00.9. They show the wording a clinician may have documented, which often differs from the Tabular description.

  • Newborn › affected by › maternal › condition (infant) (liveborn) (singleton)
  • Newborn › affected by › maternal › disorder (infant) (liveborn) (singleton)

Code first — inherited from P00

The underlying condition below must be sequenced before P00.9. P00.9 describes a manifestation and cannot be the principal or first-listed diagnosis.

  • any current condition in newborn

Excludes2 — not included here — inherited from Chapter 16

The conditions below are not part of P00.9, but a patient may have both at the same time. When documentation supports it, P00.9 and the excluded code may both be reported.

  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • tetanus neonatorum (A33)

Excludes2 — not included here — inherited from P00

The conditions below are not part of P00.9, but a patient may have both at the same time. When documentation supports it, P00.9 and the excluded code may both be reported.

  • 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.-)

How long has P00.9 existed?

P00.9 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Description changes
  • FY2018
    Newborn (suspected to be) affected by unspecified maternal condition
    Newborn affected by unspecified maternal condition

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

What other codes are in the P00 family? (9)