ICD-10-CM D16.4 is grouped within Diagnostic Related Group(s) (MS-DRG v40. benign neoplasm of connective tissue of nose ( D14.0)īenign neoplasm of bone and articular cartilage.benign neoplasm of connective tissue of larynx ( D14.1).benign neoplasm of connective tissue of eyelid ( D21.0).benign neoplasm of connective tissue of ear ( D21.0).It is most commonly found in the external ear canal and mastoid (Beale and Phelps, 1987 Shimizu et al., 2003). Osteoma of the temporal bone is usually a single, unilateral tumor. Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified ( C25.9). Osteomas occur more often in men, with male-to-female ratio ranging from 1.3:1.0 to 1.5:1.0 (Georgalas et al., 2011).For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned. 8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code.Primary malignant neoplasms overlapping site boundaries.In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes. Histopathology confirmed the diagnosis of osteoma. Complete excision was done through a postauricular approach. A 36-year-old male presented to our department with a hard swelling behind the right ear diagnosed as osteoma. The Table of Neoplasms should be used to identify the correct topography code. Osteomas may occur in the external auditory canals but are reported to be very rare in the mastoid bone. Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc.An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm. All neoplasms are classified in this chapter, whether they are functionally active or not.
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