🩺 CPT Code 42830 - Primary adenoidectomy

CPT 42830 describes a primary adenoidectomy, a surgical procedure in which the adenoids—lymphoid tissue located in the roof of the nasopharynx—are removed to treat structural or functional problems of the upper airway.

This code is used when the adenoids are removed as the main and only surgical target, without concurrent tonsillectomy or revision surgery.

What the adenoids are

Adenoids are part of the Waldeyer’s ring of lymphoid tissue. They sit behind the nasal cavity, above the soft palate, and play a role in immune response during early childhood.
However, in many children (and some adults), the adenoids become chronically enlarged, infected, or obstructive.

Why adenoidectomy is performed

Adenoidectomy is medically necessary when hypertrophic or chronically diseased adenoids cause:

1. Upper airway obstruction

Mouth breathing
Chronic nasal congestion
Snoring
Sleep-disordered breathing
Pediatric obstructive sleep apnea (OSA)

Hypertrophic adenoids can physically block the nasopharyngeal airway, leading to sleep fragmentation, behavioral issues, and growth concerns.

2. Recurrent or chronic otitis media

Enlarged adenoids can obstruct the Eustachian tube opening, causing:

Middle ear effusion
Recurrent acute otitis media
Conductive hearing loss

Adenoidectomy is often performed when medical therapy fails or when ear tube placement alone is insufficient.

3. Chronic sinusitis or nasal obstruction

Adenoidal hypertrophy can contribute to:

Chronic rhinosinusitis
Persistent nasal drainage
Postnasal drip
Recurrent infections

4. Speech and resonance issues

Severe hypertrophy may cause:

Hyponasal speech
Resonance abnormalities

5. Adenoiditis

Chronic infection of the adenoids may lead to:

Persistent sore throat
Halitosis
Chronic cough

How the procedure is performed

Although techniques vary, common approaches include:

Curettage adenoidectomy
Suction cautery adenoidectomy
Microdebrider-assisted adenoidectomy
Endoscopic adenoidectomy (for precision or revision cases)

The surgeon removes obstructive adenoidal tissue from the nasopharynx while preserving surrounding structures.

When NOT to use this code

Use CPT 42830 only for primary adenoidectomy.
Do not use it for:

Tonsillectomy + adenoidectomy (use tonsillectomy codes)
Revision/secondary adenoidectomy (use 42835/42836)
Nasopharyngeal mass removal
Endoscopic nasopharyngeal procedures outside the adenoidectomy family

🟦 ICD‑10‑CM Pairings (with HCC Status)

Most common medically necessary diagnosis

ICD-10-CM J35.2 — Hypertrophy of adenoids
- Not an HCC

Other valid diagnoses

ICD-10-CM J35.3 — Hypertrophy of tonsils with hypertrophy of adenoids
ICD-10-CM J35.8 — Other chronic diseases of tonsils and adenoids
ICD-10-CM J35.9 — Unspecified chronic disease of tonsils and adenoids
ICD-10-CM G47.33 — Obstructive sleep apnea (not an HCC)
ICD-10-CM H65.3X — Chronic serous otitis media
ICD-10-CM H66.90 — Otitis media, unspecified

HCC Summary

None of the typical adenoidectomy diagnoses map to a CMS HCC category.

🟦 Global Surgical Package

Global period: 90 days
Includes:
- Preoperative visit (day before or day of surgery)
- The procedure
- Routine postoperative care for 90 days
Excludes:
- Return to OR for complications (modifier ‑78)
- Unrelated E/M during global (modifier ‑24)
- Distinct procedural services (modifier ‑59 or X‑modifiers)

🟦 Assistant Surgeon Status

Assistant surgeon allowed: Yes
Common modifiers:
- ‑80 — Assistant surgeon
- ‑81 — Minimum assistant surgeon
- ‑82 — Assistant surgeon when resident not available

🟦 wRVU Information

The work RVU for CPT 42830 varies by year and locality.
Check the CMS Physician Fee Schedule for:

wRVU
Facility vs. non‑facility payment
Status indicators
Bilateral surgery indicator (not typically applicable)

🟦 Includes / Excludes

Includes

Primary adenoidectomy
Removal of hypertrophic adenoids causing obstruction
Adenoidectomy for sleep‑disordered breathing
Adenoidectomy for recurrent otitis media when adenoids contribute to pathology

Excludes

Adenoidectomy performed with tonsillectomy (use tonsillectomy CPT codes)
Revision/secondary adenoidectomy
Adenoidectomy for infection alone without hypertrophy
Nasopharyngeal mass excision (different CPT range)

🟦 MS‑DRG Information

Adenoidectomy is almost always outpatient, so MS‑DRG assignment is rare.

If inpatient:

DRG assignment depends on principal diagnosis, not the procedure
Common DRG families may include:
- Respiratory system DRGs
- ENT‑related DRGs
- Pediatric respiratory DRGs

Use facility‑specific DRG grouper for exact assignment.

🟦 Code Tree (Conceptual)

Surgery
 └── Digestive System
      └── Pharynx
           ├── Tonsillectomy (42820-42826)
           ├── Adenoidectomy (42830-42836)
           │     ├── 42830 - Primary adenoidectomy
           │     ├── 42831 - Primary adenoidectomy, age-specific variant
           │     ├── 42835 - Secondary/revision adenoidectomy
           │     └── 42836 - Secondary/revision adenoidectomy, age-specific variant
           └── Combined tonsil/adenoid procedures

🟦 Coding Examples

Example 1 — Standard Pediatric Adenoidectomy

Procedure: Primary adenoidectomy
CPT: 42830
Diagnosis: ** J35.2**
Modifiers: None

Example 2 — Adenoidectomy for Pediatric OSA

CPT: 42830
Diagnosis: ** G47.33**
Notes: OSA is not an HCC

Example 3 — Assistant Surgeon Present

CPT: 42830 ‑80
Diagnosis: J35.2

Example 4 — Postoperative Hemorrhage Requiring Return to OR

Procedure: Control of post‑tonsil/adenoid hemorrhage
CPT: 42960
Modifier: ‑78
Diagnosis: ** J95.830**

🟦 Documentation Tips

Document:
- Indication (obstruction, OSA, recurrent infections)
- Physical exam findings (adenoidal hypertrophy)
- Failed conservative therapy
- Technique used (curettage, suction cautery, microdebrider)
- Any complications
Ensure diagnosis supports medical necessity
For pediatric OSA:
- Include sleep study results if available
- Document severity and symptoms

📚 Sources

AMA CPT Professional Edition
CMS Physician Fee Schedule
CMS Global Surgery Guidelines
ICD‑10‑CM Official Guidelines for Coding and Reporting

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