ICD-10-CM Coding for Citalopram
There is no specific ICD-10-CM code for citalopram itself—ICD-10 codes diagnose medical conditions, not medications. You need to code the underlying condition being treated (e.g., depression, anxiety disorder) or any adverse effects/complications related to citalopram use.
Coding the Underlying Condition
When prescribing or documenting citalopram use, assign the ICD-10-CM code for the psychiatric diagnosis being treated:
Common Diagnoses Treated with Citalopram
Major Depressive Disorder, Single Episode: F32.x (with fourth character specifying severity: F32.0 for mild, F32.1 for moderate without psychotic features, F32.2 for severe without psychotic features, F32.3 for severe with psychotic features) 1
Major Depressive Disorder, Recurrent: F33.x (with similar severity specifications) 1
Generalized Anxiety Disorder: F41.1 1
Social Anxiety Disorder (Social Phobia): F40.10 1
Panic Disorder: F41.0 1
Separation Anxiety Disorder: F93.0 (typically pediatric) 1
Coding Adverse Drug Reactions or Complications
If documenting adverse effects from citalopram, use appropriate codes from the ICD-10-CM adverse drug reaction categories:
Adverse Drug Reactions
Adverse effect of selective serotonin reuptake inhibitors (SSRIs): T43.225A (initial encounter), T43.225D (subsequent encounter), T43.225S (sequela) 2
QT prolongation due to citalopram: I45.81 (citalopram can cause QT prolongation at doses exceeding 40 mg/day) 1
Serotonin syndrome: G25.79 or use more specific codes for the presenting symptoms (confusion, agitation, autonomic instability) 1
Discontinuation syndrome: Use symptom-specific codes (R42 for dizziness, R53.83 for fatigue, G44.1 for headache) as there is no specific code for SSRI discontinuation syndrome 1
Drug Poisoning/Overdose
Poisoning by selective serotonin reuptake inhibitors, accidental (unintentional): T43.221A (initial encounter) 2
Poisoning by selective serotonin reuptake inhibitors, intentional self-harm: T43.222A (initial encounter) 2
Poisoning by selective serotonin reuptake inhibitors, undetermined: T43.224A (initial encounter) 2
Important Coding Considerations
Always code the primary psychiatric diagnosis first, followed by any complications or adverse effects as secondary diagnoses 3. The medication itself (citalopram) is documented in the medication list or procedure codes (for administration), not as an ICD-10 diagnosis code 3.
For sexual dysfunction related to citalopram: Use F52.x codes (sexual dysfunction not due to a substance or known physiological condition) or N94.x codes for specific sexual dysfunction, as SSRIs commonly cause ejaculatory delay, decreased libido, and anorgasmia 4.
When clinical specificity is lacking: Use unspecified codes (e.g., F32.9 for major depressive disorder, single episode, unspecified) without the claim being denied solely on specificity grounds 3.