ICD-10-CM 2027
ICD-10 code for alveolar pneumopathy nec
Other alveolar and parieto-alveolar conditions
From the official ICD-10-CM alphabetic index entry “Pneumopathy NEC › alveolar”. Page updated September 29, 2026.
About coding alveolar pneumopathy nec
The ICD-10-CM code for alveolar pneumopathy nec is J84.09 (Other alveolar and parieto-alveolar conditions).
Within J84.0, choose J84.09 (Other alveolar and parieto-alveolar conditions) only when documentation doesn't support a more specific option: alveolar proteinosis (J84.01), pulmonary alveolar microlithiasis (J84.02) and idiopathic pulmonary hemosiderosis (J84.03).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" 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 alveolar pneumopathy nec ICD-10 codes
What is the ICD-10 code for alveolar pneumopathy nec?
- J84.09 — Other alveolar and parieto-alveolar conditions.
Is J84.09 billable?
- Yes. J84.09 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J84.09 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J84.09 as a principal diagnosis.
Is J84.09 a CC or MCC?
- J84.09 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.