ICD-10-CM 2027
ICD-10 code for pulmonary dysmaturity
From the official ICD-10-CM alphabetic index entry “Dysmaturity › pulmonary (newborn) (Wilson-Mikity)”. Page updated September 29, 2026.
About coding pulmonary dysmaturity
The ICD-10-CM code for pulmonary dysmaturity is P27.0 (Wilson-Mikity syndrome).
Within P27 (chronic respiratory disease originating in the perinatal period), P27.0 is specifically for Wilson-Mikity syndrome. Related codes cover bronchopulmonary dysplasia originating in the perinatal period (P27.1), other chronic respiratory diseases originating in the perinatal period (P27.8) and unspecified chronic respiratory disease originating in the perinatal period (P27.9).
As a secondary diagnosis it is an MCC (major complication or comorbidity), which can move an inpatient stay into the highest-paying "with MCC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 196 (Interstitial Lung Disease with MCC, relative weight 1.8336), DRG 197 (Interstitial Lung Disease with CC, relative weight 0.9492) and DRG 198 (Interstitial Lung Disease without CC/MCC, relative weight 0.7259), in MDC 04 (Diseases and Disorders of the Respiratory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about pulmonary dysmaturity ICD-10 codes
What is the ICD-10 code for pulmonary dysmaturity?
- P27.0 — Wilson-Mikity syndrome.
Is P27.0 billable?
- Yes. P27.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can P27.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict P27.0 as a principal diagnosis.
Is P27.0 a CC or MCC?
- P27.0 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.