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Table 1 ICD-9CM codes for conservative, reconstructive and mastectomy interventions

From: Catching and monitoring clinical innovation through performance indicators. The case of the breast-conserving surgery indicator

Type of intervention Old algorithm’s HDR codes New algorithm’s HDR codes
Conservative 85.2* Excision or destruction of breast tissue or
85.3* Reduction mammoplasty and subcutaneous mammectomy
85.2* Excision or destruction of breast tissue or
85.31 Unilateral reduction mammoplasty or
85.32 Bilateral reduction mammoplasty or
Reconstructive   85.4* + 85.53 Unilateral breast implant or
85.4* + 85.54 Bilateral breast implant or
85.4* + 85.95 Insertion of breast tissue expander or
85.33 Unilateral subcutaneous mammectomy with synchronous implant or
85.35 Bilateral subcutaneous mammectomy with synchronous implant
85.34 Other unilateral subcutaneous mammectomy or + 85.53/85.54/85.95
85.36 Other bilateral subcutaneous mammectomy + 85.53/85.54/85.95
Mastectomy 85.4* Mastectomy 85.4* Mastectomy