2027 ICD-10-CM Diagnosis Code P29.0Neonatal cardiac failure
P29.0 is a billable ICD-10-CM diagnosis code for neonatal cardiac failure. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 794. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified perinatal conditions.
For Medicare Advantage risk adjustment, P29.0 maps to CMS-HCC Category 225 (Acute Heart Failure (Excludes Acute on Chronic)) under the V28 model, adding a risk factor of about 0.360 for a community, non-dual, aged beneficiary in payment year 2027.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
P29.0 maps to a payment category in the CMS-HCC model used to risk-adjust Medicare Advantage payments. Weights are the published community factors for payment year 2027.
Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Acute congestive heart failure
- Acute heart failure
- Acute left ventricular failure
- Acute left-sided congestive heart failure
- Acute right-sided congestive heart failure
- Acute right-sided heart failure
- Biventricular congestive heart failure
- Congenital cardiac failure
- Congestive heart failure
- Congestive heart failure stage C
- Congestive heart failure stage D
- Congestive heart failure with right heart failure
- Disorder confirmed
- Exacerbation of congestive heart failure
- Heart failure
- Heart failure confirmed
- Heart failure following administration of antineoplastic agent
- Heart failure with normal ejection fraction
- Heart failure with reduced ejection fraction
- Heart failure with reduced ejection fraction due to myocarditis
- High output heart failure
- Left ventricular failure
- Left ventricular failure with sepsis
- Low output heart failure
- Neonatal cardiac failure
- Neonatal cardiac failure due to decreased left ventricular output
- Neonatal cardiac failure due to pulmonary overperfusion
- Pleural effusion due to another disorder
- Pleural effusion due to congestive heart failure
- Refractory heart failure
- Right heart failure secondary to left heart failure
- Right ventricular failure
- Right ventricular failure with sepsis
- Symptomatic congestive heart failure
- X-linked intellectual disability, cardiomegaly, congestive heart failure syndrome
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to P29.0: its own notes plus those printed at P29 and Chapter 16. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- conditions that have their origin in the fetal or perinatal period (before birth through the first 28 days after birth) even if morbidity occurs later
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Code Also
A second code may be needed to fully describe the condition; the note gives no sequencing direction.
- associated underlying condition
Notes
General instructions on how these codes are used.
- Codes from this chapter are for use on newborn records only, never on maternal records
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name P29.0, its category, or a range that includes it.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Edema, edematous (infectious) (pitting) (toxic) R60.9
with heart condition or failure See: Failure, ventricular, left;
newborn P29.0
heart See Also: Insufficiency, myocardial;
newborn P29.0
myocardial, myocardium (with arteriosclerosis) See Also: Failure, heart; I50.9
newborn P29.0
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Heart Failure
Heart failure means that your heart can't pump enough oxygen-rich blood to meet your body's needs. Heart failure doesn't mean that your heart has stopped or is about to stop beating. But without enough blood flow, your organs may not work well, which can cause serious problems.
The full article covers:
- What is heart failure?
- What causes heart failure?
- Who is more likely to develop heart failure?
- What are the symptoms of heart failure?
- What other problems does heart failure cause?
- How is heart failure diagnosed?
- What are the treatments for heart failure?
- Can heart failure be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert P29.0 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About P29.0Overview
What is the ICD-10 code for neonatal cardiac failure?
The ICD-10-CM code for neonatal cardiac failure is P29.0 (sometimes written as P290). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is P29.0 (Cardiovascular disorders originating in the perinatal period) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report neonatal cardiac failure on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does P29.0 group to?
When neonatal cardiac failure is the principal diagnosis on an inpatient stay, it groups to MS-DRG 794 (neonate with Other Significant Problems), which carries a relative weight of 1.4934. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of P29.0?
Under the General Equivalence Mappings, neonatal cardiac failure converts to ICD-9-CM 779.89 (perinatal condition NEC). The mapping is approximate, so confirm the match fits the documentation.
What HCC is P29.0?
P29.0 (neonatal cardiac failure) maps to CMS-HCC Category 225 (Acute Heart Failure (Excludes Acute on Chronic)), commonly written as HCC 225, in the CMS-HCC V28 model used for Medicare Advantage risk adjustment in payment year 2027. It does not map to any RxHCC in the Part D prescription drug model.
Does P29.0 risk-adjust for Medicare Advantage payment?
Yes. When documented and reported on a Medicare Advantage encounter, P29.0 adds a risk adjustment factor of about 0.360 to the beneficiary's RAF score for a community, non-dual, aged enrollee (published V28 weights range from 0.217 to 0.537 depending on the payment segment). A more severe related category (HCC 221, HCC 222, HCC 223, and HCC 224) supersedes it when both are reported. See the full factor table on the HCC 225 category page.
