ICD-9-CM Codes ICD-9-PCS Codes

8541 - Unilateral simple mastectomy

GEM Conversion to ICD-10 PCS

0HT.T0ZZ

Fs: 10000 – Resection of Right Breast, Open Approach

0HT.U0ZZ

Fs: 10000 – Resection of Left Breast, Open Approach

Sibling Codes

854.1

Unilateral simple mastectomy

854.2

Bilateral simple mastectomy

854.3

Unilateral extended simple mastectomy

854.4

Bilateral extended simple mastectomy

854.5

Unilateral radical mastectomy

854.6

Bilateral radical mastectomy

854.7

Unilateral extended radical mastectomy

854.8

Bilateral extended radical mastectomy

Parent Sibling Codes

850

856