ICD-10-CM 2027
ICD-10 code for Arachnophobia
From the official ICD-10-CM alphabetic index entry “Arachnophobia”. Page updated September 29, 2026.
About coding Arachnophobia
The ICD-10-CM code for Arachnophobia is F40.210 (Arachnophobia).
Within F40.21 (animal type phobia), F40.210 is specifically for Arachnophobia. Related codes cover other animal type phobia (F40.218).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 882 (Neuroses Except Depressive, relative weight 0.9952), in MDC 19 (Mental Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about Arachnophobia ICD-10 codes
What is the ICD-10 code for Arachnophobia?
- F40.210 — Arachnophobia.
Is F40.210 billable?
- Yes. F40.210 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can F40.210 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict F40.210 as a principal diagnosis.
Is F40.210 a CC or MCC?
- No. F40.210 is neither a CC nor an MCC under MS-DRG v44.0.