Excludes notes in ICD-10 will have a slightly different look.
Currently in ICD-9, there are simply excludes notes listed below codes in italic font. In ICD-10, there are two types of exclude notes:
- Excludes1: A type 1 Excludes note is a pure excludes note. It means “NOT CODED HERE!” An Excludes1 note indicates that the code excluded should never be reported with the code above the Excludes1 note. An Excludes1 is used to indicate when two conditions cannot occur together, such as a congenital form and an acquired form of the same condition.
- Excludes2: A type 2 Excludes note is used to indicate “not included here.” An Excludes2 note means that the condition excluded is not part of the condition under which it is listed, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to report both the code and the excluded code together.
Consider the following ICD-10 code:
F11.2 Opioid dependence
Excludes1: opioid abuse (F11.1x) opioid use, unspecified (F11.9x)
Excludes2: opioid poisoning (T40.0x-T40.2x)