Z90.2Acquired absence of lung [part of]

Z90.2 is the ICD-10-CM diagnosis code for acquired absence of lung [part of]. It belongs to category Z90 (acquired absence of organs, not elsewhere classified), block Z77-Z99 (persons with potential health hazards related to family and personal history and certain conditions influencing health status) and chapter 21 (factors influencing health status and contact with health services). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within Z90 (acquired absence of organs, not elsewhere classified), Z90.2 is specifically for acquired absence of lung [part of]. Related codes cover part of head and neck (Z90.0), breast and nipple (Z90.1), stomach [part of] (Z90.3), other specified parts of digestive tract (Z90.4), kidney (Z90.5), other parts of urinary tract (Z90.6), genital organ(s) (Z90.7) and other organs (Z90.8).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 205 (Other Respiratory System Diagnoses with MCC, relative weight 1.8244) and DRG 206 (Other Respiratory System Diagnoses without MCC, relative weight 0.9257), 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.

It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.

It is exempt from present-on-admission (POA) reporting, so no POA indicator is required.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as V45.76 (acquired absence of organ, lung).