2026 ICD-10-CM Diagnosis Code P27.9Unspecified chronic respiratory disease originating in the perinatal period
ICD-10-CM Codes›P00–P96›P19-P29›P27
- Billable — Valid for Submission
- Not Chronic
P27.9 is a billable ICD-10-CM diagnosis code for unspecified chronic respiratory disease originating in the perinatal period. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 196 through 198. Coders also document this condition as chronic respiratory disease originating in perinatal period. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Respiratory perinatal condition.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Chronic respiratory disease originating in perinatal period
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Disease, diseased - See Also: Syndrome;
- chronic NOS - J98.9
- newborn - P27.9
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Disease, diseased
- respiratory (tract)
- chronic NOS
- newborn
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Lung Diseases
When you breathe, your lungs take in oxygen from the air and deliver it to the bloodstream. The cells in your body need oxygen to work and grow. During a normal day, you breathe nearly 25,000 times. People with lung disease have difficulty breathing. Millions of people in the U.S. have lung disease.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert P27.9 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About P27.9Overview
Is P27.9 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report unspecified chronic respiratory disease originating in the perinatal period on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does P27.9 group to?
When unspecified chronic respiratory disease originating in the perinatal period is the principal diagnosis on an inpatient stay, it groups to MS-DRG 196, 197, 198, with relative weights from 0.7162 to 1.8872 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of P27.9?
Under the General Equivalence Mappings, unspecified chronic respiratory disease originating in the perinatal period converts to ICD-9-CM 770.7 (perinatal chr resp dis). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
