ICD-10 code for functional polymorphonuclear neutrophils disorder

The ICD-10-CM code for functional polymorphonuclear neutrophils disorder is D71.9 (Functional disorders of polymorphonuclear neutrophils, unspecified). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on D71.9.

Within D71, choose D71.9 (unspecified) only when documentation doesn't support a more specific option: Leukocyte adhesion deficiency (D71.1) and other functional disorders of polymorphonuclear neutrophils (D71.8).

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 808 (Major Hematological and Immunological Diagnoses Except Sickle Cell Crisis and Coagulation Disorders with MCC, relative weight 2.1705), DRG 809 (Major Hematological and Immunological Diagnoses Except Sickle Cell Crisis and Coagulation Disorders with CC, relative weight 1.2262) and DRG 810 (Major Hematological and Immunological Diagnoses Except Sickle Cell Crisis and Coagulation Disorders without CC/MCC, relative weight 1.075), in MDC 16 (Diseases and Disorders of the Blood and Blood Forming Organs and Immunological Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.