diff --git a/p/C0CRIMA.m b/p/C0CRIMA.m
index 2357bea..781dde4 100644
--- a/p/C0CRIMA.m
+++ b/p/C0CRIMA.m
@@ -74,6 +74,9 @@ ANALYZE(BEGDFN,DFNCNT,APARMS) ; RIM COHERANCE ANALYSIS ROUTINE
     . I $D(^TMP("C0CCCR",$J,"RESULTS",0)) D  ; RESULTS EXIST
     . . W "FOUND RESULTS VARS",!
     . . M @RIMBASE@("VARS",RIMDFN,"RESULTS")=^TMP("C0CCCR",$J,"RESULTS")
+    . I $$CHKSUM(RIMDFN) D  ; CHECKSUM HAS CHANGED
+    . . W "CHECKSUM IS NEW OR HAS CHANGED",!
+    . . ZWR ^TMP("C0CRIM","CHKSUM",RIMDFN,*)
     . K ^TMP("C0CCCR",$J) ; KILL WORK AREA FOR CCR BUILDING
     . ;
     . ; EVALUATE THE VARIABLES AND CREATE AN ATTRIBUTE MAP
@@ -198,6 +201,31 @@ CPUSH(CATRTN,CBASE,CTBL,CDFN,CATTR) ; ADD PATIENTS TO CATEGORIES
     ;
     Q
     ;
+CHKSUM(CKDFN) ; DOES A CHECKSUM AND STORES IT IN MUMPS GLOBALS
+ ; 
+ S C0CCKB=$NA(^TMP("C0CRIM","CHKSUM")) ;CHECKSUM BASE
+ S C0CGLB=$NA(^TMP("C0CRIM","VARS")) ;CCR VARIABLE BASE
+ S C0CI=""
+ F  S C0CI=$O(@C0CGLB@(CKDFN,C0CI)) Q:C0CI=""  D  ;FOR EACH DOMAIN
+ . ;W "DFN:",DFN," DOMAIN:",C0CI,!
+ . S C0CJ=$NA(@C0CGLB@(CKDFN,C0CI))
+ . I C0CI="HEADER" D  ; HAVE TO TAKE OUT THE "DATE GENERATED"
+ . . S C0CDT=@C0CGLB@(CKDFN,C0CI,1,"DATETIME")
+ . . K @C0CGLB@(CKDFN,C0CI,1,"DATETIME")
+ . S C0CCK(C0CI)=$$CHKSUM^XUSESIG1(C0CJ)
+ . I C0CI="HEADER" D  ; PUT IT BACK
+ . . S @C0CGLB@(CKDFN,C0CI,1,"DATETIME")=C0CDT
+ S C0CK="C0CCK" ;
+ S C0CALL=$$CHKSUM^XUSESIG1(C0CK) ;CHECKSUM OF ALL DOMAIN CHECKSUMS
+ S CHKR=0 ; RESULT DEFAULT
+ I $D(^TMP("C0CRIM","CHKSUM",CKDFN,"ALL")) D  ; OLD CHECKSUM EXISTS
+ . I @C0CCKB@(CKDFN,"ALL")'=C0CALL S CHKR=1
+ E  S CHKR=1 ;CHECKSUM IS NEW
+ S @C0CCKB@(CKDFN,"ALL")=C0CALL
+ M @C0CCKB@(CKDFN,"DOMAIN")=C0CCK
+ ZWR ^TMP("C0CRIM","CHKSUM",CKDFN,*)
+ Q CHKR
+ ;
 CCOUNT ; RECOUNT THE CATEGORIES.. USE IN CASE OF RESTART OF ANALYZE
     ;
     I '$D(RIMBASE) D ASETUP ; FOR COMMAND LINE CALLS