ICD-10 Code for Obsession
The ICD-10-CM code for obsession is F42.8 — Other obsessive-compulsive disorder. This is the code the Alphabetic Index gives for obsession with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
Billable
Which obsession code should you use?
The Alphabetic Index lists 2 codes under Obsession, obsessional state. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
| mixed thoughts and acts | F42.2 | Mixed obsessional thoughts and acts |
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources