ICD-10 code for Conus

The ICD-10-CM code for Conus is Q14.8 (Other congenital malformations of posterior segment of eye). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on Q14.8.

Within Q14, choose Q14.8 (Other congenital malformations of posterior segment of eye) only when documentation doesn't support a more specific option: congenital malformation of vitreous humor (Q14.0), congenital malformation of retina (Q14.1), congenital malformation of optic disc (Q14.2), congenital malformation of choroid (Q14.3) and congenital malformation of posterior segment of eye, unspecified (Q14.9).

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 124 (Other Disorders of the Eye with MCC or Thrombolytic Agent, relative weight 1.2471) and DRG 125 (Other Disorders of the Eye without MCC, relative weight 0.7702), in MDC 02 (Diseases and Disorders of the Eye), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.