P22.1 ICD-10-CM Code: Transient tachypnea of newborn
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)
P22.1
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceTransient tachypnea of newborn
A temporary breathing condition in newborns, usually premature infants, characterized by rapid breathing that typically resolves within the first few days of life.
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
Official- Idiopathic tachypnea of newborn
- Respiratory distress syndrome, type II
- Wet lung syndrome
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for P22.1 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for P22.1 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for P22.1 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for P22.1 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for P22.1 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for P22.1 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 P22.1 an HCC code?
No. P22.1 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
- Code
- P22.1
- Description
- Transient tachypnea of newborn
- 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
P22.1 is the ICD-10-CM diagnosis code for transient tachypnea of newborn. A temporary breathing condition in newborns, usually premature infants, characterized by rapid breathing that typically resolves within the first few days of life. P22.1 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).
P22.1 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.
TTN is self-limited and usually resolves without specific treatment; document the resolution timeline in the medical record.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for P22.1 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •TTN is self-limited and usually resolves without specific treatment; document the resolution timeline in the medical record
- •More common in infants born via cesarean section or with maternal diabetes