D38.5Neoplasm of uncertain behavior of other respiratory organs

D38.5 is the ICD-10-CM diagnosis code for neoplasm of uncertain behavior of other respiratory organs. It belongs to category D38 (neoplasm of uncertain behavior of middle ear and respiratory and intrathoracic organs), block D37-D48 (neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes) and chapter 2 (neoplasms). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within D38, choose D38.5 (other respiratory organs) only when documentation doesn't support a more specific option: larynx (D38.0), trachea, bronchus and lung (D38.1), pleura (D38.2), mediastinum (D38.3), thymus (D38.4) and respiratory organ, unspecified (D38.6).

Don't report D38.5 together with the conditions in its Excludes1 note: neoplasm of uncertain behavior of ear (external) (skin) (D48.5), neoplasm of uncertain behavior of nose NOS (D48.7) and neoplasm of uncertain behavior of skin of nose (D48.5).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 180 (Respiratory Neoplasms with MCC, relative weight 1.7806), DRG 181 (Respiratory Neoplasms with CC, relative weight 1.0936) and DRG 182 (Respiratory Neoplasms without CC/MCC, relative weight 0.7439), in MDC 04 (Diseases and Disorders of the Respiratory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 235.9 (neoplasm of uncertain behavior of other and unspecified respiratory organs).