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Wiki coding neoplasms

Allisoncuttino

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Local Chapter Officer
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Dalzell, SC
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I am taking a practice proficiency exam and got the question "Patient arrived in ED complaining of having sever RUQ pain, nausea and vomiting x several weeks and a 20 lb weight loss. Tests revealed a mass within the gallbladder. However, no cholecystitis or stones. The patient was admitted and a surgeon was consulted. The next day, a cholecystectomy was performed. The pathology results show the patient to have cancer of the gallbladder. Code the diagnosis for the surgery."

I went to the neoplasm table and then went to gallbladder and then coded it as unspecified behavior.

When I looked up the answer, I was wrong and they coded it as primary malignancy.

Are we to assume a primary malignancy if it is not specified? Thanks!
 
It is because they said 'cancer'. Look up cancer in your ICD-10 book. It will say, Cancer (see also Neoplasm, by site, malignant). Had they said neoplasm it would be different but cancer codes to malignant.
 
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