The record and items in this group allow collecting comorbidities in various different ways:
Positive vs. negative information: A registry may either collect only comorbidities that an individual has or had (positive information), or also conditions or groups thereof that an individual does not have or never had (negative information). Positive information is conveyed by the status values Currently, Sometime or Previously (as Previously refers to positive status in the past), and negative information through the values Not currently, Never or again Previously (as Previously also means a negative status in the present).
Current vs. retrospective collection: The current status with respect to a diagnosis can be collected by offering the status values Currently and Not currently, whereas retrospective information is conveyed through the values Currently, Previously and Never.
Predefined vs. unrestricted values: A registry can either use a list of predefined comorbidities or groups in their data collection forms, which makes sense in particular for patient-reported data, or allow entering or selecting any ICD-10 code. Predefined lists may be tailored to the diagnosis of patient by including common comorbidities or side effects of commonly used drugs.
Specific diagnoses vs. groups of conditions: For example, ICD-10 includes not only specific diagnoses such as K25 - Gastric ulcer, but also codes that cover broader ranges of conditions such as K92.9 - Disease of digestive system, unspecified. In order to maximise the informational content, more specific codes should be preferred for positive information, whereas broader codes should be used whenever negative information is collected. As code for “Other diagnosis” in the sense of “Other than the predefined values”, the ICD-10 code R69 - Unknown and unspecified causes of morbidity may be used.
Comorbidity as code of the classification specified in Comorbidity classification. Registries, in particular patient-reported registries, may provide common comorbidities as a list in their data collection forms or have users enter the diagnosis in a free-text field which is then coded by a curator.
| Item type: | restricted text |
| Usage in other datasets: | SMADMDLGMD |
Classification used in the item Comorbidity code. The list of possible values may be amended in future versions of the dataset to enable the use of codes present only in local ICD-10 modifications.
| Item type: | single selection |
| Usage in other datasets: | SMADMDLGMD |
| Value ID | Description |
|---|---|
| ICD-10 | ICD-10 |
| ICD-11 | ICD-11 |
| MedDRA | MedDRA |
Currently, Previously and
Never with suitable user-friendly wording. See the
introduction
for more information and alternative ways to collect this item.
| Item type: | single selection |