Monitor, Extracellular Fluid, Lymphedema, Extremity

OBH is the FDA product code for Monitor, Extracellular Fluid, Lymphedema, Extremity, a class II device type, regulated under 21 CFR 870.2770. FDA's definition for this code reads: "Measure impedances in affected and unaffected but opposite extremity to periodically monitor the level of extracellular fluid or the differences in bioimpedance between opposing extremities for patients who have been previously diagnosed with unilateral lymphedema (that is, in one affected extremity)". As of 2026-09-10, FDA records hold 10 510(k) clearances under this code, the most recent dated 2026-01-28, and one recall.