Mental Health Substance Abuse Clinical Classification Software (CCS-MHSA) assigns variables that identify mental health and substance abuse-related diagnoses in hospital discharge records using the ICD-9-CM diagnosis codes.

The four-digit CCS-MHSA categories included in CCSMSPn include additional detail. For example, the 3-digit category 654 for Developmental Disorders, is further divided into the following categories:

• Communication Disorders (value 6541)
• Developmental Disabilities (value 6542)
• Intellectual Disabilities (value 6543)
• Learning Disorders (value 6544)
• Motor Skill Disorders (value 6545)

More information on the CCS-MHSA is available under Tools & Software on the HCUP-US website.