Army · MOS history
Converted to 91K, dated October 1, 1994 by the source.
Historical steps
The source names a code the branch later retired, or whose reviewed record is historical. Its story continues on that code's own page.
Recorded successor: 91F Small Arms/Towed Artillery Repairer, also listed in today's directory
Medical Lab Specialist
DA Pam 611-21 Table 10-4 maps predecessor MOSC 92B4 to 91K; source successor entries: 91K MEDICAL LABORATORY SPECIALIST; conversion effective 01 Oct 1994.
1. Table 10-4, PDF p. 291 · source dated 2025
PDF page 291 (opens in a new tab)Historical information is drawn from the sources linked above. Classification dates are not personal service dates. Spot an error? Let us know.