F51.02

What This Code Means

Insomnia that develops as a direct result of a stressful life event or significant change, such as a job loss, relationship problem, or major life transition. The sleep difficulty is temporary and typically resolves once the person adjusts to the new situation.

Coding Tips

• •Always identify and document the specific stressor or life event triggering the insomnia, as this distinguishes adjustment insomnia from other insomnia types
• •Verify that the insomnia onset is clearly related to the identified stressor and began within 3 months of the stressful event to support accurate coding