F81.81 Disorder of written expression

The ICD-10-CM code for Disorder of written expression is F81.81 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

5: Mental, Behavioral and Neurodevelopmental disorders (F01-F99)

Section

F80-F89: Pervasive and specific developmental disorders (F80-F89)

Category F81

7 codes (5 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to F81.81:

• Difficult, difficulty (in) › spelling (specific)
• Disorder (of) › spelling (specific)
• Agraphia (absolute) › developmental
• Retardation › spelling (specific) (without reading disorder)
• Disability, disabilities › spelling, specific
• Development › delayed › written expression
• Delay, delayed › development › spelling
• Development › delayed › spelling

Inclusion Terms

• Specific learning disorder, with impairment in written expression
• Specific spelling disorder

U.S. Hospital Utilization

• An estimated 360 U.S. inpatient stays in 2023 included F81.81 among the documented diagnoses.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Pain disorders related to psychological factors (TOC entry)

a. Pain disorders related to psychological factors ..................................................................... 43

Psychoactive substance use disorders (TOC entry)

b. Mental and behavioral disorders due to psychoactive substance use ................................... 43

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)

Cite This Page

Reference F81.81 with the canonical source and edition:

F81.81 — Disorder of written expression. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/F81.81

Canonical URL: https://icd10codingpro.com/codes/F81.81