315 Specific delays in development (315.00-315.9) ICD-9-CM
The 315.00-315.9 block classified 315 specific delays in development with 15 legacy diagnosis codes. None remain valid for claim submission; each code below links to its reference page with the official ICD-10-CM replacement under the CMS General Equivalence Mappings.
Retired Code Set
ICD-9-CM stopped being valid for U.S. claims with dates of service on or after October 1, 2015, when ICD-10-CM replaced it. Use this index for historical lookups and crosswalking; for current coding, start from the ICD-10-CM codes list or the ICD-9 / ICD-10 converter.
Legacy Codes in the 315.00-315.9 Block 15 codes
None of these codes remain valid for claim submission. Each code page shows its ICD-10-CM replacement under the CMS General Equivalence Mappings.
- 315.00 Reading disorder NOS
- 315.01 Alexia
- 315.02 Developmental dyslexia
- 315.09 Reading disorder NEC
- 315.1 Mathematics disorder
- 315.2 Oth learning difficulty
- 315.31 Expressive language dis
- 315.32 Recp-expres language dis
- 315.34 Speech del d/t hear loss
- 315.35 Chldhd onset flncy disor
- 315.39 Speech/language dis NEC
- 315.4 Devel coordination dis
- 315.5 Mixed development dis
- 315.8 Development delays NEC
- 315.9 Development delay NOS
Questions About This Page
Are the 315.00-315.9 codes still billable?
No. Every code in this block became invalid for U.S. claims after September 30, 2015. Each code page linked above shows the ICD-10-CM replacement CMS assigned in the General Equivalence Mappings, and the ICD-9 / ICD-10 converter translates any of them directly.
What did the 315.00-315.9 block classify?
The block classified 315 specific delays in development with 15 codes in the final ICD-9-CM release. It sat under Mental disorders (290–319) in the legacy hierarchy.
Related References
Source: final CMS ICD-9-CM release (version date October 1, 2014). Retired from U.S. claims after September 30, 2015.
