F81.81Billable

Disorder of written expression

Chapter
5. Mental, Behavioral and Neurodevelopmental disorders
Category
F81
Effective date
October 1, 2026

Related codes in category F81

F81Specific developmental disorders of scholastic skillsF81.0Specific reading disorderYesF81.2Mathematics disorderYesF81.8Other developmental disorders of scholastic skillsF81.89Other developmental disorders of scholastic skillsYesF81.9Developmental disorder of scholastic skills, unspecifiedYes

Frequently asked questions

What is ICD-10 code F81.81?

F81.81 is an ICD-10-CM diagnosis code for Disorder of written expression.

Is F81.81 a billable code?

Yes. F81.81 is billable and specific enough to be used on a claim.

What ICD-10-CM chapter is F81.81 in?

F81.81 falls under Chapter 5: Mental, Behavioral and Neurodevelopmental disorders.

When did F81.81 become effective?

F81.81 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to F81.81?

F81.81 belongs to category F81, which includes 6 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.