| Recommended Mapping (based on statistical analysis) |
| Source ICD-9 | Mapping Type | Target ICD-10 |
| 2531 (Diagnosis) - Ant pituit hyperfunc NEC (Other and unspecified anterior pituitary hyperfunction) | Single To Single | E228 (Diagnosis) - Other hyperfunction of pituitary gland |
| CMS/CDC General Equivalence Mappings |
| 2531 (Diagnosis) - Ant pituit hyperfunc NEC (Other and unspecified anterior pituitary hyperfunction) | Single To Single | Alternative #1: E228 (Diagnosis) - Other hyperfunction of pituitary gland |
Single To Single | Alternative #2: E229 (Diagnosis) - Hyperfunction of pituitary gland, unspecified | Single To Single | Alternative #3: E221 (Diagnosis) - Hyperprolactinemia |