564 Functional digestive disorders, not elsewhere classified (564.00-564.9) ICD-9-CM
The 564.00-564.9 block classified 564 functional digestive disorders, not elsewhere classified with 14 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 564.00-564.9 Block 14 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.
- 564.00 Constipation NOS
- 564.01 Slow transt constipation
- 564.02 Outlet dysfnc constption
- 564.09 Constipation NEC
- 564.1 Irritable bowel syndrome
- 564.2 Postgastric surgery synd
- 564.3 Vomiting post-gi surgery
- 564.4 Postop GI funct dis NEC
- 564.5 Functional diarrhea
- 564.6 Anal spasm
- 564.7 Megacolon NEC
- 564.81 Neurogenic bowel
- 564.89 Funct dis intestine NEC
- 564.9 Funct dis intestine NOS
Questions About This Page
Are the 564.00-564.9 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 564.00-564.9 block classify?
The block classified 564 functional digestive disorders, not elsewhere classified with 14 codes in the final ICD-9-CM release. It sat under Diseases of the digestive system (520–579) 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.
