G52.2Disorders of vagus nerve

G52.2 is the ICD-10-CM diagnosis code for disorders of vagus nerve. It belongs to category G52 (disorders of other cranial nerves), block G50-G59 (nerve, nerve root and plexus disorders) and chapter 6 (diseases of the nervous system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within G52 (disorders of other cranial nerves), G52.2 is specifically for disorders of vagus nerve. Related codes cover disorders of olfactory nerve (G52.0), disorders of glossopharyngeal nerve (G52.1), disorders of hypoglossal nerve (G52.3), disorders of multiple cranial nerves (G52.7), disorders of other specified cranial nerves (G52.8) and cranial nerve disorder, unspecified (G52.9).

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 073 (Cranial and Peripheral Nerve Disorders with MCC, relative weight 1.5779) and DRG 074 (Cranial and Peripheral Nerve Disorders without MCC, relative weight 1.0173), in MDC 01 (Diseases and Disorders of the Nervous System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 352.3 (disorders of pneumogastric [10th] nerve).