NPI Atlas

ICD-10 Code for Stress

The default ICD-10-CM 2027 code for stress is F43.9 – Reaction to severe stress, unspecified. More specific codes depend on the details documented, as listed in the official index (8 codes, 8 billable).

Main code: F43.9 – Reaction to severe stress, unspecified
Billable: Yes

Index entries for Stress

family – see Disruption, family
fetal – P84
- complicating pregnancy – O77.9
  - due to drug administration – O77.1
mental NEC – Z73.3
- work-related – Z56.6
physical NEC – Z73.3
- work-related – Z56.6
polycythemia – D75.1
reaction – F43.9 – see also Reaction, stress
workplace – Z56.6
work schedule – Z56.3

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.