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I can finally extract a correct RxNorm code from the NDC. Whole routine still untested, but should work.

This commit is contained in:
sam 2009-02-23 00:47:40 +00:00
parent 092c8ec6a6
commit 910b31eb72
1 changed files with 26 additions and 18 deletions
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44
p/CCRMEDS6.m
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@ -96,30 +96,14 @@ EXTRACT(MINXML,DFN,OUTXML) ; EXTRACT MEDICATIONS INTO PROVIDED XML TEMPLATE
. ; We obviously need the NDC. That is easily obtained from the prescription.
. ; Field 27 in file 52
. N NDC S NDC=$$GET1^DIQ(52,RXIEN,27,"I")
. S NDC=$TR(NDC,"-") ; Remove dashes
. ; I discovered that file 176.002 might give you two codes for the NDC
. ; One for the Clinical Drug, and one for the ingredient.
. ; So the plan is to get the two RxNorm codes, and then find from
. ; file 176.001 which one is the Clinical Drug.
. N C0CZRXN,DIERR
. ; ... I refactored this into GETRXN
. N RXNORM,SRCIEN,RXNNAME,RXNVER
. I +NDC,$D(^C0CRXN) D ; $Data is for Systems that don't have our RxNorm file yet.
. . D FIND^DIC(176.002,,"@;.01","PX",NDC,"*","NDC",,,"C0CZRXN","DIERR")
. . B:$D(DIERR)
. . S RXNORM(0)=+C0CZRXN("DILIST",0) ; RxNorm(0) will be # of entries
. . N I S I=0
. . F S I=$O(C0CZRXN("DILIST",I)) Q:I="" S RXNORM(I)=$P(C0CZRXN("DILIST",I,0),U,2)
. . ; At this point, RxNorm(0) is # of entries; RxNorm(1...) are the entries
. . ; If RxNorm(0) is 1, then we only have one entry, and that's it.
. . I RXNORM(0)=1 S RXNORM=RXNORM(1)
. . ; Otherwise, we need to find out which is the clinical drug
. . I RXNORM(0)>1 D
. . . S I=0
. . . F S I=$O(RXNORM(I)) Q:I="" Q:$L($G(RXNORM)) D
. . . . N RXNIEN S RXNIEN=$$FIND1^DIC(176.001,,,RXNORM(I),"B")
. . . . N RXNTTY S RXNTTY=$$GET1^DIQ(176.001,RXNIEN,3)
. . . . I RXNTTY="CD" S RXNORM=RXNORM(I) QUIT
. . I $L($G(RXNORM))=0 S RXNORM=""
. . S RXNORM=$$GETRXN(NDC)
. . S SRCIEN=$$FIND1^DIC(176.003,,,"RXNORM","B")
. . S RXNNAME=$$GET1^DIQ(176.003,SRCIEN,6)
. . S RXNVER=$$GET1^DIQ(176.003,SRCIEN,7)
@ -314,3 +298,27 @@ EXTRACT(MINXML,DFN,OUTXML) ; EXTRACT MEDICATIONS INTO PROVIDED XML TEMPLATE
. F MEDI=1:1:MEDTMP(0) W MEDTMP(MEDI),!
Q
;
GETRXN(NDC) ; Extrinsic Function; PUBLIC; NDC to RxNorm
;; Get RxNorm Concept Number for a Given NDC
;
S NDC=$TR(NDC,"-") ; Remove dashes
N RXNORM,C0CZRXN,DIERR
D FIND^DIC(176.002,,"@;.01","PX",NDC,"*","NDC",,,"C0CZRXN","DIERR")
I $D(DIERR) D ^%ZTER BREAK
S RXNORM(0)=+C0CZRXN("DILIST",0) ; RxNorm(0) will be # of entries
N I S I=0
F S I=$O(C0CZRXN("DILIST",I)) Q:I="" S RXNORM(I)=$P(C0CZRXN("DILIST",I,0),U,2)
; At this point, RxNorm(0) is # of entries; RxNorm(1...) are the entries
; If RxNorm(0) is 1, then we only have one entry, and that's it.
I RXNORM(0)=1 QUIT RXNORM(1) ; RETURN RXNORM(1)
; Otherwise, we need to find out which one is the semantic
; clinical drug. I built an index on 176.001 (RxNorm Concepts)
; for that purpose.
I RXNORM(0)>1 D
. S I=0
. F S I=$O(RXNORM(I)) Q:I="" D Q:$G(RXNORM)
. . N RXNIEN S RXNIEN=$$FIND1^DIC(176.001,,,RXNORM(I),"SCD")
. . I +$G(RXNIEN)=0 QUIT ; try the next entry...
. . E S RXNORM=RXNORM(I) QUIT ; We found the right code
QUIT +$G(RXNORM) ; RETURN RXNORM; if we couldn't find a clnical drug, return with 0