Non-standard ICD10 Diagnoses

See also: Non-standard CCI Procedure

The following non-standard ICD10 Diagnoses we customized/added have been added to encode specific diagnostic details that ICD10 doesn't account for. Pages would generally be added to this page using Template:ICD10 nonstandard code.

ICD10 CA specific Codes

• Note that for ICD10 (unlike ICD9) different countries do some customization. In general here we're using the ICD-10-CA (Canadian) version but in some cases we have borrowed codes that are from the US customization.

ICD10 CM specific Codes

These are codes that follow the American ICD10 CM listing and are different from the WHO listing.

Codes our program added

• U00-U49 - Provisional codes for temporary assignment by World Health Organization of new diseases of uncertain etiology
• U50-U99 - Provisional codes for research and temporary assignment in Canada

Total List of codes in the contingency range

These should all be already addressed above, think of this as a contingency check in case we forgot to specifically address one.

Effect on other systems that use ranges of codes in definitions

APACHE Acute Dxs in ICD10 codes, APACHE Comorbidities in ICD10 codes, Charlson Comorbidities in ICD10 codes and ICD10 blocks rely on ranges of codes. Some of the diagnoses listed above might be coded instead of other diagnoses that would have been in the relevant ranges, and therefore prevent inclusion in one of these schemes. Here are our considerations of them.

• Bronchiolitis obliterans organizing pneumonia (BOOP, cryptogenic organizing pneumonia (COP)) ()
• SARS (severe acute respiratory syndrome) ()

Dx grouping JALT With our addition of codes, collectors may use one of our codes rather than the closest standard ICD10 code. In that case, the dx would not show up in the range. How should we address this? The most likely candidates above seem Bronchiolitis obliterans organizing pneumonia (BOOP, cryptogenic organizing pneumonia (COP)) and SARS (severe acute respiratory syndrome) AG REPLY -- for this nonstd BOOP code, there are no existing issues regarding any of the comorbid groups (e.g. Charlson) Allan, could you confirm that that this is what we found when we looked into BOOP. AG REPLY --- so far Tina the only 2 U-codes that would ever be a primary dx are U04 and U14.68 -- which belong respectively to ICD10 chapters J and E. But whenever we add a new U-code we need to remember to decide which chapter (if any) it needs to be included under. Tina to add to template. I can't add this to the template, this is not how templates work, they won't warn me as I start a new dx page. We'd need to remember this some other way. And I just saw another dx that might fit in here: Diabetes mellitus acute complication: Non-ketotic hyperosmolar state Actually, neither BOOP nor SARS would currently be captured by our APACHE Acute Dxs in ICD10 codes filter - they likely should be. So this is still an issue and we would miss them if we did something similar. How do we fix it for the Apache codes and prevent this problem going fwd? Ttenbergen 15:22, 2022 June 30 (CDT) Discussed at JALT, Allan will review. Ttenbergen 10:32, 2022 August 24 (CDT)

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