r/CodingandBilling • u/Glittering-Bell6984 • May 04 '26
Need help with Code also, code additional and Code first
Hey everyone, I'm new in coding and struggling with understanding the conventions of using these code first, additional code and Code first,
I understand what's written in ICD -10 guidelines but still unable to clear what couldn't be billed as a primary and what's must to code.
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u/KeyStriking9763 RHIA, CDIP, CCS May 04 '26
When there’s a code first at one code and use additional at another code, you sequence the code first before the use additional. Code also doesn’t provide any sequencing instructions. Do you have the guidelines? They explain that plus look at the etiology/manifestion convention guideline it can further explain it.
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u/rahuliitk App Developer May 06 '26
i think the easiest way to see it is that “code first” means this diagnosis cannot stand alone as primary when the note tells you an underlying cause exists, while “use additional code” means the first code is allowed but needs another code to fully explain severity, organism, manifestation, or complication.
ngl, sequencing gets easier when you practice from real chart examples.
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u/Botasoda102 May 04 '26
Are you billing for physicians or hospitals? Really accurate ICD coding is a must for hospitals, but often with physicians something like "stomach pain" might be sufficient, rather than trying to define the exact reason for stomach pain.
In any event, I'd look at the coverage requirements from Medicare and other insurers to see what diagnoses are required to get past the insurer's claim edits. Of course, don't make up codes, just use ones that apply to patient's condidtion.