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  2. ICD-10-CM Codes List
  3. C00–D49
  4. D37-D48
  5. Neoplasm of uncertain behavior of middle ear and respiratory and intrathoracic organs (D38)

Neoplasm of uncertain behavior of middle ear and respiratory and intrathoracic organs (D38)

The ICD-10 code D38 covers neoplasms of uncertain behavior arising in the middle ear, respiratory system, and intrathoracic organs. These codes are used when a tumor's nature is not clearly benign or malignant, requiring careful documentation for accurate diagnosis and treatment planning.

This section includes several specific codes for different anatomical locations. For example, D38.0 is for neoplasms of uncertain behavior of the larynx, also known by terms like "neoplasm of false vocal cord" or "tumor of arytenoid," helping coders precisely identify laryngeal tumors. D38.1 applies to tumors in the trachea, bronchus, or lung, synonymously called “carcinoid tumor of lung” or “hilar mass.” Codes D38.2 through D38.5 classify uncertain neoplasms in the pleura, mediastinum, thymus, and other respiratory organs such as the nasal cavity or middle ear, covering various synonyms like “solitary fibrous tumor of pleura” or “tumor of Eustachian tube.” Finally, D38.6 is a general code for unspecified respiratory organ neoplasms of uncertain behavior, encompassing terms relating to unclear tumors of the respiratory tract. These ICD-10 codes aid clinicians and coders in capturing the complexity of tumors when their behavior remains uncertain.

Instructional Notations

Type 1 Excludes

A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

  • neoplasm of uncertain behavior of heart D48.7

Clinical Terms

The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.

Epiglottis

A thin leaf-shaped cartilage that is covered with LARYNGEAL MUCOSA and situated posterior to the root of the tongue and HYOID BONE. During swallowing, the epiglottis folds back over the larynx inlet thus prevents foods from entering the airway.

Eustachian Tube

A narrow passageway that connects the upper part of the throat to the TYMPANIC CAVITY.

Glottis

The vocal apparatus of the larynx, situated in the middle section of the larynx. Glottis consists of the VOCAL FOLDS and an opening (rima glottidis) between the folds.