lymphadenectomy

DEFINITION of lymphadenectomy

A lymphadenectomy — also called lymph node dissection (LND) — is the surgical removal of one or more groups of lymph nodes, performed almost exclusively as part of the surgical management of malignancy. It serves two purposes: therapeutic (removing nodes harboring cancer cells to reduce disease spread) and diagnostic/staging (examining nodes under microscopy to establish accurate cancer stage). In a regional lymphadenectomy, some nodes in the tumor area are removed; in a radical lymphadenectomy, most or all nodes in the region are removed en bloc. From a medical-coding perspective, lymphadenectomy documentation must clarify: Extent (limited/staging vs. regional vs. radical/complete) Anatomic region (cervical, axillary, inguinal, pelvic, para-aortic, retroperitoneal, etc.) Approach (open vs. laparoscopic vs. robotic) Whether performed as a standalone procedure or bundled with a primary resection (e.g., nephrectomy, adrenalectomy, radical hysterectomy) Sentinel node biopsy vs. full dissection

These distinctions directly affect CPT code selection and bundling rules. Famed British surgeon Berkeley Moynihan once wrote: “The surgery of cancer is not the surgery of organs; it is the surgery of the lymphatic system.” The term derives from Latin lympha (clear water) + Greek adēn (gland) + Greek -ektomia (cutting out).

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ETYMOLOGY of lymphadenectomy

latin greek - The word is composed of Latin and Greek roots:

lymph- / lympho-: From Latin lympha, meaning “clear water” or “water goddess” — referring to the pale, watery fluid that flows through the lymphatic system

aden- / adeno-: From Greek adēn (ἀδήν), meaning “gland” — used in medical terminology to denote glandular tissue, including lymph nodes (which were historically classified as glands)

-ectomy: From Greek -ektomia, meaning “a cutting out,” derived from ektemnein (“to cut out”), combining ek (“out”) + temnein (“to cut”)

• lymph- → Latin lympha, meaning “clear water, fluid”
• aden- → Greek adēn, meaning “gland”
• -ectomy → Greek ektomē, meaning “cutting out, excision”
• lymphadenectomy literally means “cutting out the lymph glands.”

Note: The Latin word lympha itself traces back to a deity of fresh water in Roman mythology, and later came to describe any colorless fluid. The Greek adēn (gland) root also appears in adenoma, adenopathy, and adenocarcinoma.

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Related Terms

Term	Meaning	Coding Relevance
sentinel lymph node biopsy	Removal of the first lymph node(s) to receive drainage from a tumor	Precedes full dissection; CPT 38900 (injection), 38500 series (biopsy); distinct from lymphadenectomy
lymphedema	Chronic swelling from lymphatic obstruction post-dissection	Common complication; ICD-10 I89.0 or I97.2 (post-mastectomy); code as complication when documented
lymphocele	Collection of lymphatic fluid post-dissection	Complication requiring drainage; CPT 49062 or aspiration codes
lymphadenopathy	Disease or enlargement of lymph nodes	Diagnostic finding leading to lymphadenectomy; R59.- or C77.- depending on etiology
metastasis	Spread of cancer to lymph nodes or distant sites	Primary indication for lymphadenectomy; C77.- codes for secondary nodal involvement
neck dissection	Lymphadenectomy specific to cervical lymph nodes	Radical (38720), modified radical (38724), suprahyoid (38700)
RPLND	Retroperitoneal lymph node dissection for testicular cancer	Uses laparoscopic (38571) or open (38562/38770) codes
adrenalectomy	Removal of adrenal gland	May be performed concurrently with lymphadenectomy; CCI bundling rules apply
nephrectomy	Removal of kidney	Lymphadenectomy may be separately coded or bundled depending on extent and payer

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Common Medical Terms Using the Root

• Lymphadenopathy - Disease, swelling, or abnormality of lymph nodes (lymphaden- + -opathy = disease)

• lymphadenitis - Inflammation of lymph nodes (lymphaden- + -itis = inflammation)

• Lymphangitis - Inflammation of lymphatic vessels (lymph- + angi- = vessel + -itis)

• adenoma - Benign glandular tumor (aden- + -oma = tumor)

• Adenocarcinoma - Malignant tumor of glandular origin (adeno- + carcinoma)

• Lymphoma - Primary malignancy of lymphoid tissue (lymph- + -oma); distinct from lymph node metastasis

• Lymphoscintigraphy - Nuclear imaging of lymphatic channels used for sentinel node mapping

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Common Clinical Indications

• Breast cancer — axillary lymph node dissection (ALND) for node-positive disease or failed sentinel biopsy

• Melanoma — regional dissection for nodal metastasis

• Head and neck squamous cell carcinoma — radical or modified radical neck dissection

• Thyroid cancer — central and lateral neck dissection for metastatic disease

• Gynecologic malignancies (cervical, endometrial, ovarian) — pelvic and para-aortic lymphadenectomy for staging

• Prostate cancer — pelvic lymph node dissection at time of prostatectomy

• Testicular cancer — retroperitoneal lymph node dissection (RPLND)

• Gastric cancer — D2 lymphadenectomy

• Colorectal cancer — mesorectal excision with nodal clearance

• Renal cell carcinoma — regional lymphadenectomy when nodes are involved

Types of Lymphadenectomy

• Limited/Staging lymphadenectomy: Removes a few selected nodes to determine cancer stage; not a full dissection

• Regional lymphadenectomy: Removes most nodes in the tumor-draining region; balances staging accuracy with morbidity

• Radical lymphadenectomy: Complete removal of all nodes, surrounding fatty tissue, and sometimes adjacent structures in the region

• Sentinel lymph node biopsy (SLNB): Targeted removal of the first draining node only; used to determine if full dissection is needed

Surgical Approaches

• Open: Direct incision; used for radical or extensive dissections

• Laparoscopic: Minimally invasive; used for pelvic and retroperitoneal dissections (CPT 38571)

• Robotic-assisted: Enhanced visualization for pelvic and para-aortic dissections; reported under laparoscopic CPT codes

Common Complications

• lymphedema: Most significant long-term complication; lifelong management required; ICD-10 I89.0 or I97.2

• Lymphocele: Fluid collection requiring drainage

• Seroma formation

• Nerve injury (e.g., spinal accessory nerve in neck dissection)

• Vascular injury

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Documentation Clues for Coders

Look for phrases such as:

• “Lymph node dissection performed”

• “Nodes sent to pathology”

• “Lymph node packet removed”

• “Complete cervical/axillary/pelvic node dissection”

• “Sentinel node identified and excised” (vs. full dissection — different CPT)

• “En bloc resection with adjacent nodes”

• “Para-aortic sampling” (limited — staging code)

• “Radical neck dissection” (complete cervical — 38720)

• “Modified radical neck dissection” (38724)

• “Number of nodes retrieved: X” (documents thoroughness)

• “Bilateral pelvic lymph node dissection” (flags modifier -50 or two-line billing)

These help determine extent, anatomic site, approach, and bundling vs. separate procedure rules.

Coder’s Notes

• Most lymphadenectomy CPT codes are “separate procedure” codes — do NOT bill separately when performed as a routine part of a more comprehensive procedure (e.g., radical nephrectomy, radical hysterectomy) unless the dissection represents significantly additional distinct work

• CCI edits are extensive for lymphadenectomy with primary organ resection codes — always run an NCCI edit check before billing separately

• Modifier -59 (or preferred X{EPSU} modifiers) may allow separate billing when lymphadenectomy is a truly distinct service at a separate anatomic site

• Modifier -22 — use when documentation supports substantially increased work beyond the typical dissection (e.g., dense adhesions, obesity, prior radiation, unusually high node count)

• Modifier -52 — use for reduced services when only a unilateral dissection is performed for a code that typically implies bilateral (e.g., 38571 — bilateral total pelvic lymphadenectomy — performed unilaterally)

• Modifier -50 — bilateral dissection same session; check payer preference vs. two-line billing

• Sentinel lymph node biopsy (38900 for injection + 38500 series for excision) is not a lymphadenectomy — do not interchange codes

• Sequencing: When lymphadenectomy is performed for metastatic disease, sequence the primary malignancy first, then the C77.- code for nodal involvement per ICD-10-CM guidelines

• Z85.- — Personal history of malignancy codes may be needed for surveillance-related encounters post-lymphadenectomy

• Postoperative lymphedema (I89.0 or I97.2) should be coded as a complication when documented; supports ongoing care medical necessity

ICD-10-CM Diagnosis Codes

Code	Description
C77.0	Secondary and unspecified malignant neoplasm of lymph nodes of head, face and neck
C77.1	Secondary and unspecified malignant neoplasm of intrathoracic lymph nodes
C77.2	Secondary and unspecified malignant neoplasm of intra-abdominal lymph nodes
C77.3	Secondary and unspecified malignant neoplasm of axilla and upper limb lymph nodes
C77.4	Secondary and unspecified malignant neoplasm of inguinal and lower limb lymph nodes
C77.5	Secondary and unspecified malignant neoplasm of intrapelvic lymph nodes
C77.8	Secondary and unspecified malignant neoplasm of lymph nodes of multiple regions
C77.9	Secondary and unspecified malignant neoplasm of lymph node, unspecified
I89.0	Lymphedema, not elsewhere classified (post-lymphadenectomy complication)
I97.2	Postmastectomy lymphedema syndrome (breast cancer-specific lymphedema)
R59.0	Localized enlarged lymph nodes (pre-op finding)
R59.1	Generalized enlarged lymph nodes (pre-op finding)
Z85.6	Personal history of leukemia (post-treatment surveillance context)
Z85.79	Personal history of other malignant neoplasms of lymphoid, hematopoietic and related tissue

CPT Codes — Open Lymphadenectomy

Code	Description
38700	Suprahyoid lymphadenectomy
38720	Cervical lymphadenectomy — complete (radical neck dissection)
38724	Cervical lymphadenectomy — modified radical neck dissection
38740	Axillary lymphadenectomy — superficial
38745	Axillary lymphadenectomy — complete
38746	Axillary lymphadenectomy; with thoracic lymphadenectomy, including mediastinal and peritracheal nodes (List separately in addition to primary procedure)
38747	Abdominal lymphadenectomy, regional, including celiac, gastric, portal, peripancreatic, with or without para-aortic and vena caval nodes
38760	Inguinofemoral lymphadenectomy — superficial, in conjunction with inguinal hernia repair or other procedure
38765	Inguinofemoral lymphadenectomy — superficial, in conjunction with radical resection of skin lesion
38770	Pelvic lymphadenectomy — including external iliac, hypogastric, and obturator nodes
38780	Retroperitoneal transabdominal lymphadenectomy — extensive, including pelvic, aortic, and renal nodes

CPT Codes — Laparoscopic / Limited Lymphadenectomy

Code	Description
38562	Limited lymphadenectomy for staging (separate procedure); pelvic and para-aortic — open
38564	Limited lymphadenectomy for staging (separate procedure); retroperitoneal (aortic and/or splenic) — open
38571	Laparoscopy, surgical; with bilateral total pelvic lymphadenectomy
38572	Laparoscopy, surgical; with bilateral total pelvic lymphadenectomy and peri-aortic lymph node sampling
38900	Intraoperative identification (e.g., mapping) of sentinel lymph node(s) (Add-on code; injection dye or radioisotope)

Common Modifiers

Modifier	Use
-50	Bilateral procedure — bilateral lymphadenectomy same session (check payer vs. two-line billing)
-52	Reduced services — unilateral dissection when bilateral code description is used (e.g., 38571 performed unilaterally)
-22	Increased procedural services — substantially more work than typical dissection
-51	Multiple procedures — when lymphadenectomy is a secondary procedure at the same session
-59	Distinct procedural service — use carefully with NCCI edits to separate lymphadenectomy from primary resection when truly distinct
-58	Staged or related procedure during postoperative period — completion lymphadenectomy after initial sentinel node biopsy
-80	Assistant surgeon — may be required for complex radical dissections

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DERIVATIONS of lymphadenectomy

TABLE definition AS Definition
FROM #medterm 
WHERE length(filter(roots, (word) => econtains([[lymphadenectomy]].roots, word))) > 0 AND file.name != [[lymphadenectomy]].file.name
SORT file.name ASC

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Query functionality

TABLE definition AS Definition
FROM #medterm 
WHERE length(filter(definition, (word) => econtains([[lymphadenectomy]].definition, word))) > 0 AND file.name != [[lymphadenectomy]].file.name

Med roots Appendix A Prefixes Appendix B Combining Forms Appendix C Suffixes Appendix D Suffix forms