P29.12 ICD-10-CM Code: Neonatal bradycardia
HCC Buddy Code Card
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FY 2026 Apr update / Certain conditions originating in the perinatal period (P00-P96) / Respiratory and cardiovascular disorders specific to the perinatal period (P19-P29)
P29.12
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceNeonatal bradycardia
A newborn's heart is beating slower than normal, which may indicate a conduction problem or other cardiac issue.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
N/A—
Not mapped
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
OfficialICD-10-CM does not list inclusion terms for P29.12 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for P29.12 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for P29.12 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for P29.12 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for P29.12 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for P29.12 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for P29.12 in this effective period.
Buddy Documentation Tip
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
Is P29.12 an HCC code?
No. P29.12 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
- Code
- P29.12
- Description
- Neonatal bradycardia
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF
- —
- Billable
- Yes
- Payment year
- 2026
Coder workflow notes
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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
P29.12 is the ICD-10-CM diagnosis code for neonatal bradycardia. A newborn's heart is beating slower than normal, which may indicate a conduction problem or other cardiac issue. P29.12 sits in the ICD-10-CM chapter for certain conditions originating in the perinatal period (p00-p96), within the section covering respiratory and cardiovascular disorders specific to the perinatal period (p19-p29).
P29.12 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Document the specific heart rate and any associated symptoms or causes.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for P29.12 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Document the specific heart rate and any associated symptoms or causes
- •Consider whether this is related to maternal medications (like beta-blockers) or congenital heart block