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ICD-10-CM 2027 diagnosis code

F45.4Pain disorders related to psychological factors

Not billable — use a more specific code

F45.4 is a header code, so it can't be reported by itself. Choose one of the 2 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About F45.4

F45.4 is the ICD-10-CM diagnosis code for pain disorders related to psychological factors. It belongs to category F45 (somatoform disorders), block F40-F48 (anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders) and chapter 5 (mental, Behavioral and Neurodevelopmental disorders). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within F45 (somatoform disorders), F45.4 is specifically for pain disorders related to psychological factors. Related codes cover Somatization disorder (F45.0), Undifferentiated somatoform disorder (F45.1), hypochondriacal disorders (F45.2), other somatoform disorders (F45.8) and somatoform disorder, unspecified (F45.9).

To report this condition, pick the subcode that matches the documentation: F45.41 (factors) and F45.42 (factors).

Don't report F45.4 together with the conditions in its Excludes1 note: pain NOS (R52).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under F45.4

Coding notes

Excludes1Not coded here — never report together with this code

Notes that apply from higher levels

Instructions written at a parent level also apply to F45.4.

› From F45 Somatoform disorders
Excludes2
  • dissociative and conversion disorders (F44.-)
  • factitious disorders (F68.1-, F68.A)
  • hair-plucking (F63.3)
  • lalling (F80.0)
  • lisping (F80.0)
  • malingering [conscious simulation] (Z76.5)
  • nail-biting (F98.8)
  • psychological or behavioral factors associated with disorders or diseases classified elsewhere (F54)
  • sexual dysfunction, not due to a substance or known physiological condition (F52.-)
  • thumb-sucking (F98.8)
  • tic disorders (in childhood and adolescence) (F95.-)
  • Tourette's syndrome (F95.2)
  • trichotillomania (F63.3)

Broader instructions also apply from Chapter 5: Mental, Behavioral and Neurodevelopmental disorders.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about F45.4

Is F45.4 billable?

No. F45.4 is a header code. Report one of its more specific subcodes instead.