how to add others in formats in sas - sas

Question

I am trying to use a format table to do look-ups for ICD codes.
I am import a csv format table with two columns icd_code and cancer_type
and my main dataset has two columns patient_id and icd.
So I can use the formats to lookup the icd codes and return cancer type in CANCER column. But when some icd codes that are not in the format table the CANCER column will just return the ICD value itself. So I want a 'other = *' in the VALUE of PROC FORMAT. Since I have so more than 200 different cancer types so it would not be possible to add them one by one by VALUE in PROC FORMAT. Is there a way to do that when the ICD code is not in the format table it won't be able to return it own value?
Thank you for helping!
DATA FORMAT; SET FORMAT_TABLE(RENAME = (ICD_CODE = START CANCER_TYPE = LABEL));
RETAIN FMTNAME '$CANCER_TYPE';
RUN;
PROC FORMAT LIB = LIBRARY
CNTLIN = CAL.FMT;
RUN;
DATA LOOKUP_DATA; SET DATA;
CANCER = PUT(ICD, $CANCER_TYPE.);
RUN;

Answer 1

The CNTLIN data set will need one additional row to specify the label for other values.
DATA MY_CNTLIN;
SET
FORMAT_TABLE(RENAME = (ICD_CODE = START CANCER_TYPE = LABEL))
END = LAST_CODE
;
RETAIN FMTNAME '$CANCER_TYPE';
OUTPUT;
IF LAST_CODE THEN DO;
hlo='O';
label='*';
OUTPUT;
END;
RUN;
Read SAS Documentation more details.
Proc FORMAT, CNTLIN=, Input Control Data Set