HCPCS Modifier GS

Description
Dosage of erythropoietin stimulating agent has been reduced and maintained in response to hematocrit or hemoglobin level.

Guidelines/Instructions
This modifier is used for national claims monitoring for ESAs administered in Medicare renal dialysis facilities, so therefore, is not applicable to Part B.

Reference: CMS Medicare Claims Processing Manual (Pub. 100-04), Chapter 8, Section 60.4 (PDF, 1.82 MB).

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Provider Contact Center: 855-696-0705

TDD: 866-830-3188

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