ICD-10 code for adenoiditis

The ICD-10-CM code for adenoiditis is J35.02 (Chronic adenoiditis). The official index lists 9 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on J35.02.

Within J35.0 (chronic tonsillitis and adenoiditis), J35.02 is specifically for chronic adenoiditis. Related codes cover tonsillitis (J35.01) and tonsillitis and adenoiditis (J35.03).

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 011 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC, relative weight 5.6154), DRG 012 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC, relative weight 4.381), DRG 013 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC, relative weight 2.7307), DRG 152 (Otitis Media and URI with MCC, relative weight 1.1151) and DRG 153 (Otitis Media and URI without MCC, relative weight 0.7421), in Pre-MDC and MDC 03 (Diseases and Disorders of the Ear, Nose, Mouth and Throat), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.