Question NEW CKD 3 codes

mnuhfer04

Networker
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North Tonawanda, NY
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I'm trying to better understand what the difference is between the new codes N18.31 and N18.32 (stage 3a and 3b). I have looked in the new 2021 book and the guidelines, but I can't find anything. Maybe I'm missing something. Would someone be able to explain this to me? Thanks!
 

thomas7331

True Blue
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Patients fall into stage 3a or 3b CKD depending on their estimated glomerular filtration rate (eGFR) lab results. Since this requires an interpretation by the physician of the kidney function tests, it's not something a coder needs to know in order to assign the code since we can only use what a provider has documented. I've found that in the practices I work with, almost all physicians will just document 'stage 3', which of course would just be coded as N18.30, stage 3 unspecified.
 

mnuhfer04

Networker
Messages
35
Location
North Tonawanda, NY
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Patients fall into stage 3a or 3b CKD depending on their estimated glomerular filtration rate (eGFR) lab results. Since this requires an interpretation by the physician of the kidney function tests, it's not something a coder needs to know in order to assign the code since we can only use what a provider has documented. I've found that in the practices I work with, almost all physicians will just document 'stage 3', which of course would just be coded as N18.30, stage 3 unspecified.
Thank you! Same with our physicians.
 
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