ICD-10 code for kidney function test abnormal

The ICD-10-CM code for kidney function test abnormal is R94.4 (Abnormal results of kidney function studies).

Within R94 (abnormal results of function studies), R94.4 is specifically for abnormal results of kidney function studies. Related codes cover of central nervous system (R94.0), of peripheral nervous system and special senses (R94.1), pulmonary function studies (R94.2), cardiovascular function studies (R94.3), liver function studies (R94.5), thyroid function studies (R94.6), other endocrine function studies (R94.7) and of other organs and systems (R94.8).

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 695 (Kidney and Urinary Tract Signs and Symptoms with MCC, relative weight 1.1139) and DRG 696 (Kidney and Urinary Tract Signs and Symptoms without MCC, relative weight 0.6679), in MDC 11 (Diseases and Disorders of the Kidney and Urinary Tract), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.