ICD-10 Code for Borderline Personality Disorder: F60.3

Yes, when the record documents borderline personality disorder. The FY2027 Alphabetic Index lists "Disorder, personality, borderline" at F60.3 and "Personality (disorder), borderline" at F60.3, and the tabular list confirms it: F60.3 is titled Borderline personality disorder. No fifth character is required.

The tabular list adds three inclusion terms: aggressive personality (disorder), emotionally unstable personality disorder, and explosive personality (disorder). A record that uses one of those terms is coded to F60.3 too. Because the Official Guidelines base code assignment on the provider's diagnostic statement, not on the criteria the provider used (Section I.A.19), the note needs the diagnosis in words, not a restatement of criteria.

F60.3 has an Excludes2 note for antisocial personality disorder (F60.2). The Official Guidelines define Excludes2 as "not included here": the excluded condition is not part of the F60.3 code, but a client may have both, so both codes can be reported when both are documented (Section I.A.12.b).

The note runs both ways: F60.2 has an Excludes2 note for borderline personality disorder (F60.3), and also an Excludes1 note for conduct disorders (F91.-). No Excludes1 note connects F60.3 to another personality disorder code, so the tabular list does not forbid reporting two F60 codes when the clinician documents two different personality disorders. Whether a record supports two is the clinician's documented judgment.

These codes appear alongside a personality disorder diagnosis when the clinician documents them. Neither R45.85 nor F60.3 lists the other in an Excludes note, so the tabular list does not block reporting them together:

Not as a probable or rule-out diagnosis in an outpatient setting. Section IV.H of the FY2027 guidelines says not to code diagnoses documented as probable, suspected, questionable, rule out, compatible with, consistent with, or working diagnosis. Code the condition to the highest degree of certainty for that visit instead, such as the presenting symptoms. This differs from the rules used by short-term acute care, long-term care and psychiatric hospitals.

F60.9, Personality disorder, unspecified, is for a documented personality disorder whose type is not specified. It is a diagnosis, not a placeholder for an unfinished evaluation. Once the evaluation supports F60.3, the code should move to match (Section IV.F.3, highest level of specificity).

The ICD-10-CM code says why the client is being seen; the CPT code says what service was provided. A 53 minute individual session for a client with documented borderline personality disorder is reported as CPT 90837 with F60.3 as the diagnosis, the initial evaluation as CPT 90791, and group sessions as CPT 90853. Which diagnoses and services a payer covers varies by payer and plan. Confirm with the payer before billing.