Non-standard ICD10 Diagnoses
The following non-standard ICD10 Diagnoses we customized/added have been added to encode specific diagnostic details that ICD10 doesn't account for.
ICD10 CA specific Codes
These are codes that follow the Canadian CICI listing and are different from the WHO listing.
| ICD10 | description | reason for using non-standard code |
|---|---|---|
| C7A.0 | Malignant carcinoid tumor | there is no Canadian code for carcinoid tumor and so we used this US code; this is also the reason why this code has a letter in it. |
| J45.91 | Status asthmaticus | Status Asthmaticus is coded as J46 in the International version of ICD10 but we chose to code it as this code. |
| U82.1 | Resistance to antimicrobials, methicillin (anti-staph penicillins) | Antimicrobial resistance is not coded in standard ICD10. |
| U82.20 | Resistance to carbapenem antibiotics | Antimicrobial resistance is not coded in standard ICD10. |
| U82.3 | Resistance to antimicrobials, extended spectrum beta lactamase (ESBL) | Antimicrobial resistance is not coded in standard ICD10. |
| U82.8 | Resistance to antimicrobials, antibiotic, resistance to other beta lactams | Antimicrobial resistance is not coded in standard ICD10. |
| U83.9 | Resistance to antimicrobials, miscellaneous antibacterial antibiotics | Antimicrobial resistance is not coded in standard ICD10. |
| U84.0 | Resistance to antimicrobials, antiparasitic drug | Antimicrobial resistance is not coded in standard ICD10. |
| U84.1 | Resistance to antimicrobials, antifungal drug | Antimicrobial resistance is not coded in standard ICD10. |
| U84.2 | Resistance to antimicrobials, antiviral agent | Antimicrobial resistance is not coded in standard ICD10. |
| U84.3 | Resistance to antimicrobials, classic anti-mycobacterial agent | Antimicrobial resistance is not coded in standard ICD10. |
| U84.9 | Resistance to antimicrobials, drug NOS | Antimicrobial resistance is not coded in standard ICD10. |
| U85.1 | Asystole | Asystole is not coded in standard ICD10. |
| U85.2 | Pulseless Electrical Activity (PEA) | Pulseless Electrical Activity (PEA) is not coded in standard ICD10. |
| Z95.811 | Heart assist device, has one | We needed to be able to collect LVADs and standard ICD10 doesn't have a code for this. |
ICD10 CM specific Codes
These are codes that follow the American ICD10 CM listing
and are different from the WHO listing.
| ICD10 | description | reason for using non-standard code |
|---|---|---|
| J84.89 | Bronchiolitis obliterans organizing pneumonia (BOOP, cryptogenic organizing pneumonia (COP)) | There is no specific code for BOOP in the CA version. |
Codes our program added
Our choice of codes
As per [1]:
- U00-U49 - Provisional codes for temp orary assignment by World Health Organization of new diseases of uncertain etiology
- U50-U99 - Provisional codes for research and temporary assignment in Canada
We are going to stick out extra codes into the WHO range, anticipating that it is more likely that we would want to adopt all-Canada temp codes than WHO temp codes.
Effect on other systems that use ranges of codes in definitions
List of codes in the contingency range
| ICD10 | description | reason for using non-standard code |
|---|---|---|
| 0 | No Dx Entered | This is the default code that shows up in an ICD10 diagnosis when a new record is entered. The entry should always be replaced with an actual diagnosis by the time a record is finalized. Cross check Query check_ICD10_unfilled will give an error for the record if this entry is present. |
| 00 | Not an Infection (ICD10 pathogen alternative) | This is a possible entry as an ICD10 pathogen. It isn't an actual ICD10 code, but it is used in our database to prevent someone from forgetting to combine a pathogen with a diagnoses requiring pathogens. |
| 000 | No Comorbidities (ICD10 code) | This code is entered as a Comorbid Diagnosis for patients who have no comorbidities so that we can cross-check that the entry was not simply forgotten. |
| U04 | SARS (severe acute respiratory syndrome) | This is a special purpose code currently assigned by the WHO for SARS. |
| U14.68 | Diabetes mellitus acute complication: Non-ketotic hyperosmolar state | In ICD10 proper, this code would be grouped together with Diabetes mellitus chronic complication NOS which is less specific than we want, or with Diabetic coma which would miss cases that are not severe enough to cause coma, so we added this code. |
| U22.11 | Stenotrophomonas species | We needed to some track pathogens that do not have a specific ICD10 code. |
| U22.12 | Citrobacter species | We needed to some track pathogens that do not have a specific ICD10 code. |
| U22.13 | Enterobacter species | We needed to some track pathogens that do not have a specific ICD10 code. |
| U22.14 | Acinetobacter species | We needed to some track pathogens that do not have a specific ICD10 code. |
| U22.9 | Infectious organism, unknown | We needed to track some pathogens that do not have a specific ICD10 code. |
alternate way of listing: