On a shield shaped silver metal and epoxied device 1-1/8” in height blazoned as follows: Murrey, semy-de-lis Argent (Silver), a bend Argent bearing a cross bendwise Gules.  Attached below the shield, a tri-parted Black scroll inscribed with “ASSESS DEVELOP ASSURE” in Silver.

The escutcheon bears the fleur-de-lis commonly associated with the state of Louisiana, through French influence, pays tribute to the location of Fort Johnson. The white stole with a red cross alludes to the historical mission of mercy and compassion medical units have always performed. Maroon and white are the traditional colors of the Army Medical Department. Silver metal denotes precision and sterility.

The distinctive unit insignia was approved on 14 September 2017.  The insignia was redesignated to Fort Johnson with symbolism revised on 4 August 2023.