42836

🟦 What 42836 Represents — Deep Clinical and Coding Detail

42836 describes a secondary (revision) adenoidectomy performed in patients aged 12 years or older.
This code exists because revision adenoidectomy in older patients is more technically complex and less common, requiring specialized approaches and instrumentation.

Why revision adenoidectomy is needed in older patients

Adenoidal tissue typically regresses with age, but in some adolescents and adults, it may:

• Persist abnormally
• Regrow after prior removal
• Become chronically infected
• Obstruct the nasopharynx
• Contribute to Eustachian tube dysfunction

Residual or recurrent adenoidal tissue can cause:

• Chronic nasal obstruction
• Snoring or sleep-disordered breathing
• Persistent or recurrent otitis media
• Chronic sinus issues
• Hyponasal speech
• Recurrent adenoiditis

Why this code is age‑specific

According to AAPC, 42836 is specifically for patients aged 12 or older undergoing a secondary adenoidectomy^1^.
Older patients often have:

• More fibrotic tissue
• More scarring from prior surgery
• A deeper nasopharynx
• More complex anatomy
• Higher bleeding risk
• Need for endoscopic visualization

This increased complexity justifies a separate CPT code.

How the procedure is performed

Revision adenoidectomy in older patients often requires:

• Endoscopic visualization for precision
• Microdebrider to remove dense or fibrotic tissue
• Cautery or laser for hemostasis
• Targeted dissection around the torus tubarius and choanae
• Careful management of scar tissue

These techniques reduce risk and improve completeness of removal.

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

Most common medically necessary diagnosis

• J35.2 — Hypertrophy of adenoids
  • Not an HCC

Other valid diagnoses

• J35.3 — Hypertrophy of tonsils with hypertrophy of adenoids
• J35.8 — Other chronic diseases of tonsils and adenoids
• J35.9 — Unspecified chronic disease of tonsils and adenoids
• G47.33 — Obstructive sleep apnea
• H65.3X — Chronic serous otitis media
• H66.90 — Otitis media, unspecified

HCC Summary

None of the typical diagnoses for revision adenoidectomy map to CMS HCC categories.

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🟦 Global Surgical Package

• Global period: 90 days
• Includes:
  • Pre-op visit (day before/day of surgery)
  • Procedure
  • Routine post-op care
• Excludes:
  • Return to OR for complications → ‑78
  • Unrelated E/M during global → ‑24
  • Distinct procedural services → ‑59

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🟦 Assistant Surgeon Status

• Assistant surgeon allowed: Yes
• Common modifiers:
  • ‑80
  • ‑81
  • ‑82
  • AS

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🟦 wRVU Information

Work RVUs vary by year and locality.
Check the CMS Physician Fee Schedule for:

• wRVU
• Facility vs. non‑facility RVUs
• Status indicators

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🟦 Includes / Excludes

Includes

• Secondary/revision adenoidectomy in patients aged 12+
• Removal of regrown or residual adenoidal tissue
• Endoscopic-assisted revision procedures

Excludes

• Primary adenoidectomy → 42830 / 42831
• Revision adenoidectomy under age 12 → 42835
• Tonsillectomy
• Nasopharyngeal mass excision

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🟦 MS‑DRG Information

Revision adenoidectomy is usually outpatient.
If inpatient, DRG assignment depends on:

• Principal diagnosis
• Presence of CC/MCC
• Age and comorbidities

Common DRG families may include:

• ENT infection DRGs
• Pediatric/adult respiratory DRGs
• Airway obstruction DRGs

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🟦 Code Tree (Conceptual)

Surgery
 └── Digestive System
      └── Pharynx
           ├── Tonsillectomy (42820-42826)
           ├── Adenoidectomy (42830-42836)
           │     ├── 42830 - Primary adenoidectomy
           │     ├── 42831 - Primary adenoidectomy (age-specific)
           │     ├── 42835 - Secondary adenoidectomy (<12)
           │     └── 42836 - Secondary adenoidectomy (12+)
           └── Combined tonsil/adenoid procedures

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🟦 Coding Examples

Example 1 — Recurrent Adenoidal Hypertrophy in a Teenager

• CPT: 42836
• Dx: J35.2
• Indication: Regrowth causing nasal obstruction

Example 2 — Persistent OSA After Prior Adenoidectomy

• CPT: 42836
• Dx: G47.33

Example 3 — Chronic Otitis Media in an Adult

• CPT: 42836
• Dx: H65.33

Example 4 — Assistant Surgeon

• CPT: 42836‑80
• Dx: J35.2

Example 5 — Return to OR for Postoperative Hemorrhage

• CPT: 42960‑78
• Dx: J95.830

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🟦 Documentation Requirements

• Document prior adenoidectomy (date if known)
• Describe persistent or recurrent symptoms
• Identify obstructive or hypertrophic residual tissue
• Describe surgical technique used for revision
• Document medical necessity for repeat surgery
• Include findings such as:
  • Tissue regrowth
  • Scarring
  • Obstruction of choanae
  • Eustachian tube involvement

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📚 Sources

1. AAPC summary of CPT 42836 (secondary adenoidectomy, age 12 or older). AAPC
2. MD Clarity CPT 42836 overview, including modifiers and clinical context. MD Clarity