I97.2 Postmastectomy lymphedema syndrome

Billable ICD-10-CM code, FY2026.

Applicable to

• Elephantiasis due to mastectomy
• Obliteration of lymphatic vessels

Applies from I97 Intraoperative and postprocedural complications and disorders of circulatory system, not elsewhere classified

Excludes2 (not included here)

• postprocedural shock (T81.1-)

MS-DRG index

Defines the logic of DRG(s) 600-601 in MDC 09.

Approximate ICD-9-CM (GEMs)

• 457.0 Postmastectomy lymphedema syndrome

Medicare Code Edits (MCE v43.1 (April 2026))

• Adult diagnoses (age 15 through 124): Age conflict edit. These diagnoses are clinically expected only in patients age 15 through 124.

Code annotations containing back-references to I97.2

Back-references to I97.2

• Type 1 Excludes: I89.0 Lymphedema, not elsewhere classified ("postmastectomy lymphedema (I97.2)")

Diagnosis Index entries for I97.2

• Complication (s) (from) (of) › circulatory system › postprocedural › lymphedema after mastectomy
• Complication (s) (from) (of) › surgical procedure (on) › elephantiasis or lymphedema › postmastectomy
• Complication (s) (from) (of) › surgical procedure (on) › lymphedema › postmastectomy
• Complication (s) (from) (of) › surgical procedure (on) › postmastectomy lymphedema syndrome
• Edema, edematous (infectious) (pitting) (toxic) › lymphatic › due to mastectomy
• Elephantiasis (nonfilarial) › due to › mastectomy
• Elephantiasis (nonfilarial) › lymphatic vessel › due to mastectomy
• Elephantiasis (nonfilarial) › surgical › postmastectomy
• Lymphedema (acquired) › postmastectomy
• Lymphedema (acquired) › surgical NEC › postmastectomy (syndrome)
• Obliteration › lymphatic vessel › due to mastectomy
• Postmastectomy lymphedema (syndrome)
• Syndrome › postmastectomy lymphedema

Nearby codes

• I97.130 Postprocedural heart failure following cardiac surgery
• I97.131 Postprocedural heart failure following other surgery
• I97.19 Other postprocedural cardiac functional disturbances
• I97.190 Other postprocedural cardiac functional disturbances following cardiac surgery
• I97.191 Other postprocedural cardiac functional disturbances following other surgery
• I97.2 Postmastectomy lymphedema syndrome (this code)
• I97.3 Postprocedural hypertension
• I97.4 Intraoperative hemorrhage and hematoma of a circulatory system organ or structure complicating a procedure
• I97.41 Intraoperative hemorrhage and hematoma of a circulatory system organ or structure complicating a circulatory system procedure
• I97.410 Intraoperative hemorrhage and hematoma of a circulatory system organ or structure complicating a cardiac catheterization
• I97.411 Intraoperative hemorrhage and hematoma of a circulatory system organ or structure complicating a cardiac bypass