ICD-10 Code for Obsession
The default ICD-10-CM 2027 code for obsession, obsessional state is F42.8 – Other obsessive-compulsive disorder. More specific codes depend on the details documented, as listed in the official index (2 codes, 2 billable).
- Main code
F42.8– Other obsessive-compulsive disorder- Billable
- Yes
Index entries for Obsession
- mixed thoughts and acts –
F42.2
How to choose the right code
Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.
Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.