528 Diseases of the oral soft tissues, excluding lesions specific for gingiva and tongue (528.00-528.9) ICD-9-CM
The 528.00-528.9 block classified 528 diseases of the oral soft tissues, excluding lesions specific for gingiva and tongue 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 528.00-528.9 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.
- 528.00 Stomatitis/mucositis NOS
- 528.01 Mucosits d/t antineo rx
- 528.02 Mucositis d/t drugs NEC
- 528.09 Stomatits & mucosits NEC
- 528.1 Cancrum oris
- 528.2 Oral aphthae
- 528.3 Cellulitis/abscess mouth
- 528.4 Oral soft tissue cyst
- 528.5 Diseases of lips
- 528.6 Leukoplakia oral mucosa
- 528.71 Keratin ridge mucosa-min
- 528.72 Keratin ridge muc-excess
- 528.79 Dist oral epithelium NEC
- 528.8 Oral submucosal fibrosis
- 528.9 Oral soft tissue dis NEC
Questions About This Page
Are the 528.00-528.9 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 528.00-528.9 block classify?
The block classified 528 diseases of the oral soft tissues, excluding lesions specific for gingiva and tongue with 15 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.
