Before we get into using Wikipedia, there are several free ICD 10 apps for iPhone and Android you should consider using as well. If you’re documenting a patient chart on a computer though, Wikipedia can sometimes be quicker than pulling out your phone and loading a medical app.
If you look up almost any type of medical condition on Wikipedia, you will see an area for ICD-9 and ICD-10 codes on the right side of the article, often under the picture of the disease pathology.
For example, let’s look for the ICD-10 code for Hypertension:
You can look up procedure ICD codes, such as Tracheal intubation:
There are even ICD 10 codes for rare disease pathologies, such as Ehlers-Danlos syndrome.
Although almost all of the medical conditions and procedures have 1CD-9 codes listed. Since ICD-10 is relatively new, using one of the many free apps out there is still probably your best bet.