C30-C39
Medium Complexity

Malignant neoplasms of respiratory and intrathoracic organs

Primary Specialty: Oncology
Last Updated: 2025-09-09

ICD-10 Codes (48)

48 billable
0 category headers
C31
Billable
Malignant neoplasm of accessory sinuses
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C31.0
Billable
Malignant neoplasm of maxillary sinus
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C31.1
Billable
Malignant neoplasm of ethmoidal sinus
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C31.2
Billable
Malignant neoplasm of frontal sinus
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C31.3
Billable
Malignant neoplasm of sphenoid sinus
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C31.8
Billable
Malignant neoplasm of overlapping sites of accessory sinuses
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C31.9
Billable
Malignant neoplasm of accessory sinus, unspecified
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C32
Billable
Malignant neoplasm of larynx
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C32.0
Billable
Malignant neoplasm of glottis
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C32.1
Billable
Malignant neoplasm of supraglottis
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C32.2
Billable
Malignant neoplasm of subglottis
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C32.3
Billable
Malignant neoplasm of laryngeal cartilage
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C32.8
Billable
Malignant neoplasm of overlapping sites of larynx
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C32.9
Billable
Malignant neoplasm of larynx, unspecified
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C33
Billable
Malignant neoplasm of trachea
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C34
Billable
Malignant neoplasm of bronchus and lung
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C34.0
Billable
Malignant neoplasm of main bronchus
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C34.00
Billable
Malignant neoplasm of unspecified main bronchus
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C34.01
Billable
Malignant neoplasm of right main bronchus
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C34.02
Billable
Malignant neoplasm of left main bronchus
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C34.1
Billable
Malignant neoplasm of upper lobe, bronchus or lung
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C34.10
Billable
Malignant neoplasm of upper lobe, unspecified bronchus or lung
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C34.11
Billable
Malignant neoplasm of upper lobe, right bronchus or lung
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C34.12
Billable
Malignant neoplasm of upper lobe, left bronchus or lung
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C34.2
Billable
Malignant neoplasm of middle lobe, bronchus or lung
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C34.3
Billable
Malignant neoplasm of lower lobe, bronchus or lung
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C34.30
Billable
Malignant neoplasm of lower lobe, unspecified bronchus or lung
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C34.31
Billable
Malignant neoplasm of lower lobe, right bronchus or lung
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C34.32
Billable
Malignant neoplasm of lower lobe, left bronchus or lung
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C34.8
Billable
Malignant neoplasm of overlapping sites of bronchus and lung
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C34.80
Billable
Malignant neoplasm of overlapping sites of unspecified bronchus and lung
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C34.81
Billable
Malignant neoplasm of overlapping sites of right bronchus and lung
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C34.82
Billable
Malignant neoplasm of overlapping sites of left bronchus and lung
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C34.9
Billable
Malignant neoplasm of unspecified part of bronchus or lung
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C34.90
Billable
Malignant neoplasm of unspecified part of unspecified bronchus or lung
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C34.91
Billable
Malignant neoplasm of unspecified part of right bronchus or lung
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C34.92
Billable
Malignant neoplasm of unspecified part of left bronchus or lung
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C37
Billable
Malignant neoplasm of thymus
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C38
Billable
Malignant neoplasm of heart, mediastinum and pleura
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C38.0
Billable
Malignant neoplasm of heart
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C38.1
Billable
Malignant neoplasm of anterior mediastinum
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C38.2
Billable
Malignant neoplasm of posterior mediastinum
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C38.3
Billable
Malignant neoplasm of mediastinum, part unspecified
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C38.4
Billable
Malignant neoplasm of pleura
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C38.8
Billable
Malignant neoplasm of overlapping sites of heart, mediastinum and pleura
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C39
Billable
Malignant neoplasm of other and ill-defined sites in the respiratory system and intrathoracic organs
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C39.0
Billable
Malignant neoplasm of upper respiratory tract, part unspecified
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C39.9
Billable
Malignant neoplasm of lower respiratory tract, part unspecified
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Updates & Changes

FY 2026 Updates

Current Year

New Codes (2)

C02.9
Malignant neoplasm of tongue, unspecified, HPV-positive
C10.8
Malignant neoplasm of overlapping sites of oropharynx, HPV-positive

Revised Codes (2)

C01
Malignant neoplasm of base of tongue - updated to include HPV status when known
C09.9
Malignant neoplasm of tonsil, unspecified - enhanced molecular classification

Deleted Codes

No codes deleted in this range for FY 2026

Historical Changes

  • •FY 2025: Routine maintenance updates with minor terminology clarifications
  • •FY 2024: Enhanced specificity requirements for certain code ranges
  • •FY 2023: Updated documentation guidelines for improved clarity

Upcoming Changes

  • •Proposed updates pending review by Coordination and Maintenance Committee
  • •Under consideration: Enhanced digital health integration codes

Implementation Guidance

  • •Review all FY 2026 updates for C30-C39 codes before implementation
  • •Always verify the most current codes in the ICD-10-CM manual
  • •Ensure clinical documentation supports the selected diagnosis codes
  • +3 more guidance items...

Range Overview

high priority

The ICD-10 code range C30-C39 pertains to malignant neoplasms of respiratory and intrathoracic organs. These codes are used to document various types of cancers affecting organs such as the nose, middle ear, larynx, trachea, bronchus, lung, heart, mediastinum, and pleura. The codes provide a detailed classification of the disease's location, type, and behavior, aiding in accurate diagnosis, treatment planning, and statistical tracking.

Key Usage Points:

  • •Always code to the highest level of specificity.
  • •Use combination codes when multiple organs are affected.
  • •Utilize additional codes to identify any associated conditions or complications.
  • •Remember to code for laterality when applicable.
  • •Consider the patient's history of malignancy when coding.

Coding Guidelines

When to Use:

  • ✓When a patient is diagnosed with lung cancer.
  • ✓When a patient has a malignant neoplasm of the trachea.
  • ✓When a patient has a malignant neoplasm of the heart.
  • ✓When a patient has a malignant neoplasm of the pleura.
  • ✓When a patient has a malignant neoplasm of the mediastinum.

When NOT to Use:

  • ✗When a patient has a benign neoplasm of the respiratory and intrathoracic organs.
  • ✗When a patient has a malignant neoplasm of the digestive organs.
  • ✗When a patient has a malignant neoplasm of the breast.
  • ✗When a patient has a malignant neoplasm of the urinary organs.
  • ✗When a patient has a malignant neoplasm of the skin.

Code Exclusions

Always verify exclusions in the patient's medical record and the ICD-10-CM Official Guidelines for Coding and Reporting.

Documentation Requirements

Accurate documentation is crucial for coding malignant neoplasms of respiratory and intrathoracic organs. It should clearly indicate the type, location, and behavior of the neoplasm, as well as any associated conditions or complications.

Clinical Information:

  • •Specific type of the malignant neoplasm.
  • •Exact location of the malignant neoplasm.
  • •Behavior of the malignant neoplasm.
  • •Presence of any associated conditions or complications.
  • •Patient's history of malignancy.

Supporting Evidence:

  • •Pathology reports.
  • •Imaging studies.
  • •Surgical notes.
  • •Oncology consultation notes.
Good Documentation Example:

Patient diagnosed with small cell carcinoma of the right lung, confirmed by biopsy.

Poor Documentation Example:

Patient has lung cancer.

Common Documentation Errors:

  • âš Not coding to the highest level of specificity.
  • âš Failure to code for laterality when applicable.
  • âš Not using combination codes when multiple organs are affected.
  • âš Not coding for associated conditions or complications.

Range Statistics

8
Total Codes
48
Billable
Complexity:
Medium
Primary Use:Clinical Documentation
Chapter:2

Coding Complexity

Medium
Complexity Rating

Coding for malignant neoplasms of respiratory and intrathoracic organs can be complex due to the need for high specificity, use of combination codes, and consideration of patient's history of malignancy. Additionally, coding for associated conditions or complications and laterality can add to the complexity.

Key Factors:
  • â–¸Need for high specificity.
  • â–¸Use of combination codes.
  • â–¸Consideration of patient's history of malignancy.
  • â–¸Coding for associated conditions or complications.
  • â–¸Coding for laterality.

Specialty Focus

These codes are primarily used by oncologists, pulmonologists, and thoracic surgeons. They are also relevant for radiologists and pathologists who provide supporting evidence for the diagnosis.

Primary Specialties:
Oncology
40%
Pulmonology
30%
Thoracic Surgery
20%
Radiology
5%
Pathology
5%
Clinical Scenarios:
  • • A patient diagnosed with adenocarcinoma of the left lung.
  • • A patient with a malignant neoplasm of the trachea undergoing surgery.
  • • A patient with a history of laryngeal cancer presenting with dysphonia.
  • • A patient with pleural mesothelioma undergoing chemotherapy.
  • • A patient with a malignant neoplasm of the heart presenting with chest pain.

Resources & References

There are several resources available for coding malignant neoplasms of respiratory and intrathoracic organs, including the ICD-10-CM Official Guidelines for Coding and Reporting, clinical references, and educational materials.

Official Guidelines:

  • ICD-10-CM Official Guidelines for Coding and Reporting
  • American Health Information Management Association (AHIMA) guidelines
  • American Academy of Professional Coders (AAPC) guidelines
  • Centers for Medicare & Medicaid Services (CMS) guidelines

Clinical References:

  • American Cancer Society guidelines
  • National Comprehensive Cancer Network (NCCN) guidelines

Educational Materials:

  • AHIMA ICD-10 training materials
  • AAPC ICD-10 training materials

Frequently Asked Questions

How do I code for a patient with a history of lung cancer?

Use a code from the Z85.1- category to indicate a personal history of malignant neoplasm of respiratory and intrathoracic organs.

What is the code for small cell carcinoma of the lung?

The code for small cell carcinoma of the lung is C34.90 if the lung's side is not specified. If the side is specified, use C34.91 for right lung and C34.92 for left lung.

How do I code for a malignant neoplasm of the pleura?

The code for a malignant neoplasm of the pleura is C38.4.