ICD-10 code for face hypoplasia

The ICD-10-CM code for face hypoplasia is Q18.8 (Other specified congenital malformations of face and neck). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on Q18.8.

Within Q18, choose Q18.8 (Other specified congenital malformations of face and neck) only when documentation doesn't support a more specific option: sinus, fistula and cyst of branchial cleft (Q18.0), preauricular sinus and cyst (Q18.1), other branchial cleft malformations (Q18.2), Webbing of neck (Q18.3), Macrostomia (Q18.4), Microstomia (Q18.5), Macrocheilia (Q18.6), Microcheilia (Q18.7) and 1 more.

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) and DRG 156 (Other Ear, Nose, Mouth and Throat Diagnoses without CC/MCC, relative weight 0.6659), in 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.