ICD-10-CM 2027
ICD-10 code for right middle lobe syndrome
From the official ICD-10-CM alphabetic index entry “Right middle lobe syndrome”. Page updated September 29, 2026.
About coding right middle lobe syndrome
The ICD-10-CM code for right middle lobe syndrome is J98.11 (Atelectasis).
Within J98.1 (pulmonary collapse), J98.11 is specifically for atelectasis. Related codes cover other pulmonary collapse (J98.19).
Don't report J98.11 together with the conditions in its Excludes1 note: newborn atelectasis and tuberculous atelectasis (current disease) (A15).
Use an additional code to identify: exposure to environmental tobacco smoke (Z77.22), exposure to tobacco smoke in the perinatal period (P96.81), history of tobacco dependence (Z87.891), occupational exposure to environmental tobacco smoke (Z57.31), tobacco dependence (F17.-) and 1 more.
Don't confuse with (Excludes1 for J98.11)
- newborn atelectasis
- tuberculous atelectasis (current disease) (A15)
Common questions about right middle lobe syndrome ICD-10 codes
What is the ICD-10 code for right middle lobe syndrome?
- J98.11 — Atelectasis.
Is J98.11 billable?
- Yes. J98.11 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J98.11 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J98.11 as a principal diagnosis.
Is J98.11 a CC or MCC?
- J98.11 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.