Crystal's MCW Coder Hub🧬 CPT Code 38700 — Suprahyoid Lymphadenectomy
📋 Code Description
Suprahyoid lymphadenectomy
CPT 38700 describes the open surgical removal of lymph nodes located above the hyoid bone in the anterior and lateral neck. This procedure involves formal dissection and excision of the suprahyoid lymph node group, which corresponds broadly to Level I cervical lymph nodes — encompassing the submental triangle (Level IA) and the submandibular triangle (Level IB).
This procedure is most commonly performed in the context of:
- Staging and treatment of oral cavity malignancies (lip, tongue, floor of mouth, buccal mucosa, hard palate, gingiva, retromolar trigone)
- Elective or therapeutic neck dissection for cancers with documented or suspected Level I nodal involvement
- Diagnostic excision of enlarged suprahyoid nodes when fine-needle aspiration or core biopsy is non-diagnostic or inadequate
Suprahyoid lymphadenectomy is a limited, site-specific lymphadenectomy targeting the superior-most cervical lymphatic compartment. It is anatomically and functionally distinct from complete cervical lymphadenectomy (38720) or modified radical neck dissection (38724), which encompass a broader multi-level cervical nodal dissection.
⚠️CPT 38700 is a standalone lymphadenectomy code specific to the suprahyoid region. When a more extensive cervical dissection is performed that includes Levels II-V in addition to Level I, the more comprehensive neck dissection codes (38720 or 38724) replace — and are not reported together with — 38700.
🗂️ Code Type & Classification
| Field | Detail |
|---|---|
| CPT Code | 38700 |
| Code Type | Category I CPT |
| Section | Surgery - Hemic and Lymphatic Systems |
| Subsection | Excision - Lymph Nodes and Lymphatic Channels |
| Procedure Type | Open lymphadenectomy |
| Anatomic Region | Suprahyoid — Level I cervical nodes |
| Nodal Levels Addressed | Level IA (submental) and/or Level IB (submandibular) |
| Global Period | 90 days |
| wRVU | 8.55 |
| Assistant Payable | ✅ Yes |
| Bilateral | ❌ Not inherently bilateral — requires modifier 50 or RT/LT when bilateral |
| Add-On Code | ❌ No |
| Co-Surgeon | ✅ May apply — particularly when combined with primary oral/oropharyngeal resection by a different surgeon |
| Facility Only | ✅ Performed in operating room / hospital facility setting |
🧭 Anatomic Overview — Suprahyoid Region & Level I Nodes
The suprahyoid region occupies the anterior and lateral neck above the hyoid bone, bounded superiorly by the mandible and divided into two primary surgical triangles:
Level IA — Submental Triangle
- Boundaries: Anterior belly of the digastric muscles bilaterally, hyoid bone inferiorly, symphysis menti superiorly
- Contents: Submental lymph nodes (typically 2-8 nodes), submental vessels, small branches of the anterior jugular vein
- Drainage from: Chin, central lower lip, tip of tongue, anterior floor of mouth, anterior mandibular gingiva
- Clinical relevance: Primary drainage basin for midline oral cavity cancers; bilateral submental node involvement is common in midline tongue and floor-of-mouth cancers
Level IB — Submandibular Triangle
- Boundaries: Anterior and posterior bellies of the digastric muscle, inferior border of the mandible
- Contents: Submandibular lymph nodes (typically 3-6 nodes), submandibular salivary gland, facial artery and vein, lingual nerve, hypoglossal nerve, mylohyoid muscle
- Drainage from: Upper and lower lips, anterior nasal cavity, soft tissue of the cheek, anterior maxillary and mandibular gingiva, anterior hard palate, body of tongue, floor of mouth, submandibular salivary gland
- Clinical relevance: The submandibular gland frequently must be sacrificed during Level IB dissection for oncologic adequacy, particularly for floor-of-mouth and tongue malignancies
🔑 Surgical Anatomy Note: During suprahyoid lymphadenectomy, the surgeon must identify and protect (or sacrifice as oncologically necessary):
- Marginal mandibular branch of facial nerve (CN VII) — runs deep to the platysma along the inferior border of the mandible; injury causes lower lip asymmetry
- Lingual nerve (CN V3) — sensory to anterior two-thirds of tongue
- Hypoglossal nerve (CN XII) — motor to intrinsic tongue muscles; injury causes ipsilateral tongue deviation and atrophy
- Facial artery and vein — typically ligated and divided as part of Level IB dissection
- Submandibular duct (Wharton’s duct) — ligated and divided if submandibular gland is removed
🔬 Procedure Details — Surgical Steps
A standard open suprahyoid lymphadenectomy includes:
- Positioning: Patient supine with neck extended (shoulder roll), head turned slightly away from operative side (or neutral for bilateral submental approach)
- Incision: Transverse or curvilinear incision in a natural skin crease of the upper neck, typically 1-2 cm below the mandibular margin; may extend across midline for bilateral dissection
- Flap elevation: Subplatysmal flaps raised superiorly to the inferior border of the mandible and inferiorly to the hyoid bone
- Identification of landmarks: Anterior digastric muscles identified and traced; marginal mandibular nerve identified and protected above the mandibular border
- Level IA dissection: Submental fatty-nodal tissue dissected from anterior digastric muscles and floor of the submental triangle; specimen freed to hyoid
- Level IB dissection: Facial vessels ligated and divided; submandibular gland dissected from its bed; lingual nerve and hypoglossal nerve identified and preserved; submandibular duct ligated; entire nodal-glandular package removed en bloc
- Hemostasis: Electrocautery, clips, and ligatures applied; careful hemostasis of facial and submental vessels
- Drain placement: Closed suction drain (Jackson-Pratt or Blake) placed in the dissection bed
- Wound closure: Platysma closed with absorbable sutures; skin closed in layers
Note
📌 The submandibular gland is typically removed as part of a complete Level IB dissection for oncologic purposes, though it may be preserved in purely diagnostic suprahyoid node biopsies. The inclusion of the gland in the specimen should be documented.
💊 wRVU & Reimbursement Summary
| Component | Value |
|---|---|
| Work RVU (wRVU) | 8.55 |
| Global Period | 90 days |
| Pre-Operative Period | 1 day |
| Post-Operative Care | Included (routine 90-day global follow-up) |
| Assistant at Surgery | ✅ Payable — document medical necessity |
| Co-Surgeon | ✅ May apply — common when combined with oral resection by a second surgeon |
| Bilateral | Requires modifier 50 or RT/LT per payer policy |
| Facility Only | ✅ Performed in hospital/ASC OR setting |
💡 The wRVU of 8.55 reflects the significant technical complexity of this procedure — the dense neurovascular anatomy of the suprahyoid region (marginal mandibular nerve, hypoglossal nerve, lingual nerve, facial vessels) and the time required for safe oncologic dissection command higher work valuation than more straightforward lymph node excision procedures such as 38531 (5.32 wRVU) or 38500 (2.60 wRVU).
💡 When 38700 is performed as part of a combined resection (e.g., simultaneous floor-of-mouth resection or glossectomy), the primary resection code and 38700 are both reportable with modifier -51 on the secondary procedure, subject to NCCI and payer edits.
🔁 Bilateral Considerations
CPT 38700 as written is a unilateral procedure. When both suprahyoid/Level I regions are dissected in the same session:
| Scenario | Correct Reporting |
|---|---|
| Bilateral suprahyoid dissection | 38700 - -50 (bilateral modifier) or separate lines with RT and LT per payer |
| Right suprahyoid only | 38700 - -RT |
| Left suprahyoid only | 38700 - -LT |
| Two surgeons performing bilateral | 38700 - -62 on each claim |
Note
📌 Bilateral suprahyoid lymphadenectomy is frequently performed for midline oral cavity malignancies (anterior tongue, floor of mouth, chin) due to the bilateral lymphatic drainage pattern of these central structures.
🔁 Common Modifiers Used With 38700
| Modifier | Description & Use |
|---|---|
| -50 | Bilateral procedure — both suprahyoid regions dissected in the same session |
| -51 | Multiple procedures — when 38700 is performed with a primary head and neck resection in the same session |
| -59 | Distinct procedural service — when payer incorrectly bundles 38700 with a primary resection code |
| -XS | Separate structure — NCCI-preferred alternative to -59 in some contexts |
| -RT | Right side — right suprahyoid/Level I dissection |
| -LT | Left side — left suprahyoid/Level I dissection |
| -80 | Assistant surgeon — payable; document medical necessity for complex dissection near critical nerves |
| -62 | Co-surgeon — when two surgeons of different specialties perform distinct, documented portions of the procedure |
| -52 | Reduced services — if procedure is significantly less than the full description (e.g., limited diagnostic excision only) |
| -58 | Staged/related procedure during global period — completion dissection after prior sentinel node or limited excision |
| -79 | Unrelated procedure during postoperative period of a prior surgery |
| -78 | Return to OR for complication during global period (e.g., hematoma evacuation, drain management under anesthesia) |
| -22 | Increased procedural services — when operative complexity significantly exceeds the typical description (document in detail) |
✅ Includes
- Open surgical approach with subplatysmal flap elevation
- Complete dissection of Level IA (submental triangle) lymph nodes
- Complete dissection of Level IB (submandibular triangle) lymph nodes
- Routine ligation and division of the facial artery and facial vein
- Removal of the submandibular salivary gland (when performed for oncologic purposes as part of Level IB clearance)
- Ligation and division of Wharton’s duct (submandibular duct)
- Identification and preservation of the marginal mandibular nerve, lingual nerve, and hypoglossal nerve
- Intraoperative hemostasis (electrocautery, clips, ties)
- Lymphatic channel ligation within the dissection bed
- Closed suction drain placement in the surgical bed
- Layered wound closure
- Local anesthesia administered by the operating surgeon when applicable
- Routine pathologic submission of the dissection specimen
❌ Excludes / Do Not Report Separately
| Excluded Code / Scenario | Reasoning / Correct Action |
|---|---|
| 38720 (Complete cervical lymphadenectomy) | If the dissection includes Levels I-V, 38720 replaces 38700 — do not report both |
| 38724 (Modified radical neck dissection) | If modified radical neck dissection is performed (Levels I-V with preservation of non-lymphatic structures), 38724 applies — not 38700 |
| 42440 (Excision of submandibular gland) | Submandibular gland removal as part of Level IB dissection is bundled into 38700 — do not separately report 42440 |
| 38500 / 38531 (Open lymph node biopsy) | Do not use nonspecific biopsy codes when a formal suprahyoid lymphadenectomy is performed; 38700 is the specific code |
| Fine-needle aspiration (10021 / 10004-10012) | Percutaneous/image-guided biopsy of suprahyoid nodes is not an open lymphadenectomy |
| 38792 / 38900 (Sentinel node mapping) | Sentinel node injection and mapping — review NCCI edits before reporting with 38700; typically not separately billable when performed in conjunction with planned lymphadenectomy |
| Drain placement (separately) | Closed suction drain placement in the neck is integral to the procedure and not separately billable |
| Wound closure (12031-13133) | Wound closure is bundled into 38700 — do not separately report repair codes for the neck incision |
| 21085 / 21089 (Oral/facial prosthesis) | Unrelated — do not confuse reconstructive prosthetic codes with lymphadenectomy |
| Frozen section interpretation (professional) | Billed separately by pathology under appropriate pathology codes; not included in 38700 |
📊 Code Tree — Cervical & Regional Lymphadenectomy (Open)
### 🔶 Suprahyoid / Level I
**38700** - Suprahyoid lymphadenectomy (Level I — submental + submandibular) ✅ ← YOU ARE HERE
### 🔶 Cervical Lymphadenectomy — Complete / Radical
38720 - Cervical lymphadenectomy, complete (radical neck dissection, Levels I-V)
38724 - Cervical lymphadenectomy, modified radical (selective preservation of sternocleidomastoid, internal jugular vein, or spinal accessory nerve, Levels I-V)
### 🔶 Limited / Staging Lymphadenectomy
38562 - Limited lymphadenectomy for staging; pelvic and para-aortic
38564 - Limited lymphadenectomy for staging; retroperitoneal (aortic and/or splenic)
### 🔶 Inguinofemoral Lymphadenectomy
38531 - Open biopsy/excision, inguinofemoral nodes
38740 - Superficial inguinal lymphadenectomy
38745 - Superficial inguinal + deep femoral lymphadenectomy
### 🔶 Thoracic / Abdominal Lymphadenectomy
38746 - Thoracic lymphadenectomy, regional, unilateral
38747 - Abdominal lymphadenectomy, regional, unilateral
### 🔶 Open Biopsy / Excision (Non-Site-Specific)
38500 - Open, superficial lymph node biopsy (unspecified/other sites)
38510 - Open, deep cervical node(s)
38520 - Open, deep cervical node(s) with excision of scalene fat pad
38525 - Open, deep axillary node(s)
38530 - Open, internal mammary node(s)
### 🔶 Laparoscopic Lymph Node Procedures
38570 - Laparoscopic retroperitoneal lymph node sampling
38571 - Laparoscopic bilateral total pelvic lymphadenectomy
38572 - Laparoscopic bilateral total pelvic lymphadenectomy + periaortic sampling
### 🔶 Sentinel Lymph Node
38792 - Injection of radioactive tracer for preoperative sentinel node ID
38900 - Intraoperative lymphatic mapping (add-on)
### 🔶 Oral Cavity Resections (Commonly Combined With 38700)
41130 - Hemiglossectomy
41135 - Partial glossectomy with unilateral radical neck dissection
41140 - Glossectomy, complete or total, without radical neck dissection
41145 - Glossectomy, complete or total, with unilateral radical neck dissection
41150 - Composite resection (excision of tongue, floor of mouth, mandibular bone, radical neck dissection); without bone graft
41153 - Composite resection with contralateral radical neck dissection
41155 - Composite resection (Commando procedure); with ipsilateral radical neck dissection
🏥 MS-DRG Considerations (Inpatient Setting)
⚠️ In the inpatient hospital setting, CPT codes are not used for claim submission. All procedures are reported using ICD-10-PCS, and MS-DRG assignment is driven by the principal diagnosis, ICD-10-PCS procedure codes, and CC/MCC status. The following information is intended to guide inpatient coders on the PCS equivalent and DRG landscape.
ICD-10-PCS Equivalent Logic for Suprahyoid Lymphadenectomy
| PCS Character | Value |
|---|---|
| Section | 0 - Medical and Surgical |
| Body System | 7 - Lymphatic and Hemic Systems |
| Root Operation | T - Resection (complete removal of a body part) or B - Excision (partial removal with qualifier X for diagnostic) |
| Body Part | 1 - Lymphatic, Right Neck; 2 - Lymphatic, Left Neck; or 0 - Lymphatic, Head (for submental nodal basin) |
| Approach | 0 - Open |
| Device | Z - No Device |
| Qualifier | Z - No Qualifier (therapeutic) or X - Diagnostic (biopsy) |
Representative PCS Codes:
07T10ZZ— Resection of Right Neck Lymphatic, Open Approach07T20ZZ— Resection of Left Neck Lymphatic, Open Approach07B10ZX— Excision of Right Neck Lymphatic, Open, Diagnostic07B20ZX— Excision of Left Neck Lymphatic, Open, Diagnostic07T00ZZ— Resection of Head Lymphatic, Open Approach (submental basin)
📌 When the submandibular gland is removed as part of the Level IB dissection, a second ICD-10-PCS code for Resection of Right/Left Submandibular Gland may also be required:
0CT90ZZ— Resection of Right Submandibular Gland, Open Approach0CTB0ZZ— Resection of Left Submandibular Gland, Open Approach
Relevant MS-DRGs
| MS-DRG | Description | Type |
|---|---|---|
| 011 | Tracheostomy for Face, Mouth & Neck Diagnoses w MCC | Surgical |
| 012 | Tracheostomy for Face, Mouth & Neck Diagnoses w CC | Surgical |
| 013 | Tracheostomy for Face, Mouth & Neck Diagnoses w/o CC/MCC | Surgical |
| 132 | Cranial/Facial Procedures w MCC | Surgical |
| 133 | Cranial/Facial Procedures w CC | Surgical |
| 134 | Cranial/Facial Procedures w/o CC/MCC | Surgical |
| 146 | Ear, Nose, Mouth & Throat Malignancy w MCC | Medical |
| 147 | Ear, Nose, Mouth & Throat Malignancy w CC | Medical |
| 148 | Ear, Nose, Mouth & Throat Malignancy w/o CC/MCC | Medical |
| 157 | Dental & Oral Diseases w MCC | Medical |
| 158 | Dental & Oral Diseases w CC | Medical |
| 159 | Dental & Oral Diseases w/o CC/MCC | Medical |
| 168 | Mouth Procedures w MCC | Surgical |
| 169 | Mouth Procedures w CC | Surgical |
| 170 | Mouth Procedures w/o CC/MCC | Surgical |
| 820 | Lymphoma & Leukemia w Major O.R. Procedure w MCC | Surgical |
| 821 | Lymphoma & Leukemia w Major O.R. Procedure w CC | Surgical |
| 822 | Lymphoma & Leukemia w Major O.R. Procedure w/o CC/MCC | Surgical |
📌 The applicable MS-DRG depends primarily on:
- Principal diagnosis — oral malignancy vs. lymphoma vs. salivary gland malignancy vs. lymphadenopathy
- ICD-10-PCS procedure codes — whether the resection constitutes an OR procedure
- CC/MCC burden — comorbidities significantly affect DRG tier and reimbursement
For oral cavity cancers undergoing composite resection + lymphadenectomy (e.g., floor-of-mouth cancer with concurrent Level I dissection), DRG 168-170 (Mouth Procedures) is typically the landing DRG. Always validate through your facility’s grouper.
🧾 Common ICD-10-CM Diagnosis Codes Used With 38700
HCC = Hierarchical Condition Category (CMS-HCC Risk Adjustment Model). Malignant neoplasm codes carry significant HCC risk-adjustment weight. Benign and inflammatory lymphadenopathy codes generally do not.
🔸 Primary Oral Cavity & Lip Malignancies — Most Common Drivers
| ICD-10-CM Code | Description | HCC |
|---|---|---|
| C00.0 | Malignant neoplasm of external upper lip | ✅ HCC 11 |
| C00.1 | Malignant neoplasm of external lower lip | ✅ HCC 11 |
| C00.9 | Malignant neoplasm of lip, unspecified | ✅ HCC 11 |
| C02.0 | Malignant neoplasm of dorsal surface of tongue | ✅ HCC 11 |
| C02.1 | Malignant neoplasm of border of tongue | ✅ HCC 11 |
| C02.2 | Malignant neoplasm of ventral surface of tongue | ✅ HCC 11 |
| C02.3 | Malignant neoplasm of anterior two-thirds of tongue, part unspecified | ✅ HCC 11 |
| C02.9 | Malignant neoplasm of tongue, unspecified | ✅ HCC 11 |
| C04.0 | Malignant neoplasm of anterior floor of mouth | ✅ HCC 11 |
| C04.1 | Malignant neoplasm of lateral floor of mouth | ✅ HCC 11 |
| C04.9 | Malignant neoplasm of floor of mouth, unspecified | ✅ HCC 11 |
| C05.0 | Malignant neoplasm of hard palate | ✅ HCC 11 |
| C05.9 | Malignant neoplasm of palate, unspecified | ✅ HCC 11 |
| C06.0 | Malignant neoplasm of cheek mucosa | ✅ HCC 11 |
| C06.1 | Malignant neoplasm of vestibule of mouth | ✅ HCC 11 |
| C06.2 | Malignant neoplasm of retromolar area | ✅ HCC 11 |
| C06.9 | Malignant neoplasm of mouth, unspecified | ✅ HCC 11 |
| C03.0 | Malignant neoplasm of upper gum | ✅ HCC 11 |
| C03.1 | Malignant neoplasm of lower gum | ✅ HCC 11 |
🔸 Secondary / Metastatic Lymph Node Involvement — Neck
| ICD-10-CM Code | Description | HCC |
|---|---|---|
| C77.0 | Secondary and unspecified malignant neoplasm of lymph nodes of head, face, and neck | ✅ HCC 11 |
| C77.8 | Secondary and unsp malignant neoplasm of lymph nodes of multiple regions | ✅ HCC 11 |
| C77.9 | Secondary and unsp malignant neoplasm of lymph node, unspecified | ✅ HCC 11 |
🔸 Salivary Gland Malignancies (Level IB / Submandibular Region)
| ICD-10-CM Code | Description | HCC |
|---|---|---|
| C08.0 | Malignant neoplasm of submandibular gland | ✅ HCC 11 |
| C08.1 | Malignant neoplasm of sublingual gland | ✅ HCC 11 |
| C08.9 | Malignant neoplasm of major salivary gland, unspecified | ✅ HCC 11 |
🔸 Skin Malignancies — Head/Neck/Face (Suprahyoid Nodal Drainage)
| ICD-10-CM Code | Description | HCC |
|---|---|---|
| C43.0 | Malignant melanoma of lip | ✅ HCC 12 |
| C43.30 | Malignant melanoma of unspecified part of face | ✅ HCC 12 |
| C43.39 | Malignant melanoma of other parts of face | ✅ HCC 12 |
| C44.01 | Basal cell carcinoma of skin of lip | ✅ HCC 12 |
| C44.319 | Basal cell carcinoma of skin of other and unspecified parts of face | ✅ HCC 12 |
| C44.329 | Squamous cell carcinoma of skin of other and unspecified parts of face | ✅ HCC 12 |
🔸 Lymphoma — Cervical / Suprahyoid Involvement
| ICD-10-CM Code | Description | HCC |
|---|---|---|
| C81.01 | Nodular lymphocyte predominant Hodgkin lymphoma, lymph nodes of head, face, neck | ✅ HCC 10 |
| C83.31 | Diffuse large B-cell lymphoma, lymph nodes of head, face, and neck | ✅ HCC 10 |
| C85.11 | Unspecified B-cell lymphoma, lymph nodes of head, face, and neck | ✅ HCC 10 |
| C84.41 | Peripheral T-cell lymphoma, NEC, lymph nodes of head, face, neck | ✅ HCC 10 |
🔸 Benign / Inflammatory — Suprahyoid Lymphadenopathy
| ICD-10-CM Code | Description | HCC |
|---|---|---|
| R59.0 | Localized enlarged lymph nodes | ❌ |
| R59.1 | Generalized enlarged lymph nodes | ❌ |
| L04.0 | Acute lymphadenitis, face, head, and neck | ❌ |
| I88.1 | Chronic lymphadenitis, except mesenteric | ❌ |
| K11.20 | Unspecified disorder of salivary gland (submandibular region) | ❌ |
| K11.2 | Sialoadenitis (submandibular gland inflammation) | ❌ |
| B27.00 | Gammaherpesviral mononucleosis without complication (cervical adenopathy) | ❌ |
| D36.0 | Benign neoplasm of lymph nodes | ❌ |
| D11.7 | Benign neoplasm of other major salivary glands | ❌ |
🔸 Neoplasm of Uncertain or Unspecified Behavior
| ICD-10-CM Code | Description | HCC |
|---|---|---|
| D47.Z9 | Other specified neoplasms of uncertain behavior of lymphoid/hematopoietic tissue | ✅ HCC 10 |
| D47.9 | Neoplasm of uncertain behavior, lymphoid/hematopoietic tissue, unspecified | ✅ HCC 10 |
| D37.09 | Neoplasm of uncertain behavior of other specified minor salivary glands | ❌ |
📌 Principal Diagnosis Sequencing — Inpatient:
- When 38700 is performed as part of a planned oncologic resection, sequence the primary malignancy as the principal diagnosis
- Metastatic nodal disease (C77.0) is coded as an additional diagnosis in the presence of a known primary
- When pre-operative pathology is equivocal and the procedure is for tissue diagnosis, R59.0 may serve as the pre-pathology principal, with the confirmed diagnosis updated on discharge or subsequent encounter
💡 Coding Examples
Example 1 — Suprahyoid Lymphadenectomy for Oral Tongue SCC Staging
Clinical Scenario:
A 58-year-old male with a T2N0 squamous cell carcinoma of the lateral tongue border (right) undergoes elective right suprahyoid lymphadenectomy (Level I dissection) as part of ipsilateral neck staging. Submandibular gland is included in the specimen. No prior neck procedures.
Correct Coding:
- 38700 - -RT — Suprahyoid lymphadenectomy, right
- C02.1 — Malignant neoplasm of border of tongue (principal)
- C77.0 — Secondary malignant neoplasm, head/face/neck lymph nodes (if nodes positive on frozen section)
✅ CPT 38700 with -RT modifier for right-sided dissection. Submandibular gland removal is bundled — do not separately report 42440.
Example 2 — Bilateral Suprahyoid Lymphadenectomy for Floor of Mouth Cancer
Clinical Scenario:
A 64-year-old female with a T3N0 squamous cell carcinoma of the anterior floor of mouth undergoes bilateral suprahyoid (Level I) lymphadenectomy due to the midline location and bilateral nodal drainage risk. Both submandibular glands are removed.
Correct Coding:
- 38700 - -50 — Suprahyoid lymphadenectomy, bilateral
- C04.0 — Malignant neoplasm of anterior floor of mouth
✅ Modifier -50 for bilateral same-session procedure. Some payers require 38700 - -RT on line 1 and 38700 - -LT - -51 on line 2 — verify payer policy.
Example 3 — Suprahyoid Dissection Combined With Hemiglossectomy
Clinical Scenario:
A 71-year-old male with T2 SCC of the right lateral tongue border undergoes right hemiglossectomy and right suprahyoid lymphadenectomy (Level I) in the same operative session. The head and neck surgeon performs both components.
Correct Coding:
- 41130 — Hemiglossectomy (primary procedure — higher value)
- 38700 - -RT - -51 — Suprahyoid lymphadenectomy, right (secondary procedure)
- C02.1 — Malignant neoplasm of border of tongue
✅ Modifier -51 applied to 38700 as the secondary procedure. Review NCCI edits to confirm no column 1/column 2 bundle exists between 41130 and 38700 that would require -59 instead.
Example 4 — Co-Surgeon Scenario: Oral Resection + Neck Dissection (Two Surgeons)
Clinical Scenario:
A head and neck surgeon performs a composite floor-of-mouth resection (41150) while an oral/maxillofacial surgeon simultaneously performs right suprahyoid lymphadenectomy (38700) through a shared neck incision. Both surgeons document their distinct roles.
Head & Neck Surgeon Billing:
- 41150 - -62 — Composite resection, with co-surgeon
- C04.0 — Malignant neoplasm of anterior floor of mouth
Oral/Maxillofacial Surgeon Billing:
✅ Modifier -62 on both claims — each surgeon bills for their documented distinct portion of the procedure. Both must submit operative notes confirming separate surgical roles.
Example 5 — Staged Completion Dissection After Positive Sentinel Node
Clinical Scenario:
A patient underwent right sentinel lymph node biopsy of the neck 3 weeks ago for a melanoma of the right cheek. The sentinel node returned positive for metastatic melanoma. The patient returns for a right suprahyoid (Level I) completion lymphadenectomy.
Correct Coding:
- 38700 - -RT - -58 — Right suprahyoid lymphadenectomy; staged/related procedure within global period of prior sentinel biopsy
- C77.0 — Secondary malignant neoplasm, head/face/neck lymph nodes
- C43.39 — Malignant melanoma of other parts of face (primary)
Note
✅ Modifier -58 confirms that this is a planned, staged procedure related to the prior sentinel node biopsy — it avoids denial due to the active global period while correctly documenting a distinct, separately planned surgical service.
Example 6 — Inpatient Tongue Cancer With Level I Dissection (ICD-10-PCS)
Clinical Scenario:
A 66-year-old male admitted for resection of a T3 SCC of the right anterior tongue. During the inpatient stay, hemiglossectomy and right suprahyoid lymphadenectomy are performed.
ICD-10-CM Diagnoses:
- Principal: C02.3 — Malignant neoplasm of anterior two-thirds of tongue, part unspecified
- Additional: C77.0 — Secondary malignant neoplasm, head/face/neck lymph nodes
ICD-10-PCS Procedures:
0CB70ZZ— Excision of Tongue, Open Approach (hemiglossectomy)07T10ZZ— Resection of Right Neck Lymphatic, Open Approach0CT90ZZ— Resection of Right Submandibular Gland, Open Approach
MS-DRG: 168-170 (Mouth Procedures ± CC/MCC), depending on comorbidity burden
⚠️ Common Coding Pitfalls
- Reporting 38700 when 38720 or 38724 is more appropriate: If the operative report describes a complete cervical dissection (Levels I-V) rather than a limited suprahyoid dissection, 38720 or 38724 is the correct code. Review the operative note for the levels dissected — the suprahyoid code applies only when the dissection is limited to the suprahyoid / Level I region.
- Separately billing 42440 for submandibular gland removal: When the submandibular gland is removed as part of oncologic Level IB dissection, its removal is bundled into 38700. Separately reporting 42440 triggers an NCCI edit and is considered unbundling.
- Using 38500 instead of 38700: 38500 is a non-site-specific open lymph node biopsy code. When a formal suprahyoid lymphadenectomy is performed, 38700 is the correct, site-specific code.
- Forgetting bilateral modifiers: Midline oral cavity cancers frequently require bilateral Level I dissection. Failing to apply modifier -50 (or -RT/-LT) for bilateral procedures results in underpayment.
- Using CPT codes on inpatient claims: In the inpatient hospital setting, ICD-10-PCS is required for all procedure reporting. CPT codes are for outpatient/professional fee coding only.
- Mismatching PCS root operations: In the inpatient setting, Excision (B) is used for partial removal with diagnostic qualifier (X), while Resection (T) is used for complete removal of a body part. The choice between B and T significantly impacts OR-procedure status and DRG assignment.
- Omitting submandibular gland PCS code inpatient: When the submandibular gland is removed as part of the lymphadenectomy in the inpatient setting, a separate ICD-10-PCS code for the gland resection is required in addition to the lymphatic resection code — they are separate body parts in PCS.
- Incorrect global period management: The 90-day global includes routine post-op wound care, drain management, and suture removal. Separate billing for these within the global period requires modifier -24 (unrelated E/M) or -79 (unrelated procedure) with supporting documentation.
- Neglecting the marginal mandibular nerve documentation: Complications such as marginal mandibular nerve injury (causing lower lip asymmetry) are common post-operatively. If a complication occurs and is treated during the global period, modifier -78 is required for return to OR procedures.
🔗 Related Codes Quick Reference
| Code | Description |
|---|---|
| 38500 | Open biopsy/excision of lymph node(s); superficial (unspecified/other sites) |
| 38510 | Open, deep cervical node(s) |
| 38520 | Open, deep cervical node(s) with excision of scalene fat pad |
| 38531 | Open biopsy/excision, inguinofemoral nodes |
| 38720 | Cervical lymphadenectomy, complete (radical neck dissection) |
| 38724 | Cervical lymphadenectomy, modified radical neck dissection |
| 38792 | Injection of radioactive tracer for preoperative sentinel node identification |
| 38900 | Intraoperative lymphatic mapping (add-on) |
| 41130 | Hemiglossectomy |
| 41135 | Partial glossectomy with unilateral radical neck dissection |
| 41140 | Glossectomy, complete or total, without radical neck dissection |
| 41145 | Glossectomy, complete or total, with unilateral radical neck dissection |
| 41150 | Composite resection (tongue, floor of mouth, mandible, neck dissection) |
| 42440 | Excision of submandibular gland (standalone — bundled when part of 38700) |
| 10021 | FNA biopsy w/o imaging guidance |
| 10005 | FNA biopsy w/ imaging guidance, first lesion |
| C77.0 | Secondary malignant neoplasm, lymph nodes of head, face, and neck |
| R59.0 | Localized enlarged lymph nodes |
AMA CPT® Professional Edition 2026 | CMS Physician Fee Schedule Look-Up Tool 2026 | CMS NCCI Policy Manual 2026 | CMS ICD-10-CM Official Guidelines for Coding and Reporting FY2026 | CMS MS-DRG Definitions Manual v43 | CMS ICD-10-PCS Official Guidelines FY2026 | AJCC Cancer Staging Manual 9th Ed. — Head and Neck | AMA CPT Assistant Archives | Shah JP et al. Head and Neck Surgery and Oncology 5th Ed.