ICD-10 code for antrum cyst

The ICD-10-CM code for antrum cyst is J34.1 (Cyst and mucocele of nose and nasal sinus).

Within J34 (other and unspecified disorders of nose and nasal sinuses), J34.1 is specifically for cyst and mucocele of nose and nasal sinus. Related codes cover abscess, furuncle and carbuncle of nose (J34.0), Deviated nasal septum (J34.2), hypertrophy of nasal turbinates (J34.3), other specified disorders of nose and nasal sinuses (J34.8) and unspecified disorder of nose and nasal sinuses (J34.9).

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 154 (Other Ear, Nose, Mouth and Throat Diagnoses with MCC, relative weight 1.5921), DRG 155 (Other Ear, Nose, Mouth and Throat Diagnoses with CC, relative weight 0.9322), DRG 156 (Other Ear, Nose, Mouth and Throat Diagnoses without CC/MCC, relative weight 0.6659) and DRG 795 (Normal Newborn, relative weight 0.2022), in MDC 03 (Diseases and Disorders of the Ear, Nose, Mouth and Throat) and MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.