ICD-10 Code for Phobia

The default ICD-10-CM 2027 code for phobia, phobic is F40.9 – Phobic anxiety disorder, unspecified. More specific codes depend on the details documented, as listed in the official index (20 codes, 20 billable).

Main code: F40.9 – Phobic anxiety disorder, unspecified
Billable: Yes

Index entries for Phobia

animal – F40.218
- spiders – F40.210
examination – F40.298
reaction – F40.9
simple – F40.298
social – F40.10
- generalized – F40.11
specific (isolated) – F40.298
- animal – F40.218
  - spiders – F40.210
- blood – F40.230
- injection – F40.231
- injury – F40.233
- men – F40.290
- natural environment – F40.228
  - thunderstorms – F40.220
- situational – F40.248
  - bridges – F40.242
  - closed in spaces – F40.240
  - flying – F40.243
  - heights – F40.241
- specified focus NEC – F40.298
- transfusion – F40.231
- women – F40.291
specified NEC – F40.8
- medical care NEC – F40.232
state – F40.9

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.