2025 Neoplasms of Uncertain Behavior ICD-10-CM Codes
The 2025 Neoplasms of Uncertain Behavior ICD-10-CM Codes list includes 69 codes used when it cannot be determined if a neoplasm is benign or malignant. These codes should be used only when pathology or clinical evaluation does not provide a definitive classification. Accurate reporting of uncertain behavior neoplasms is critical for proper follow-up, treatment decisions, and claim accuracy.
- Neoplasm of uncertain behavior of brain and central nervous
- Neoplasm of uncertain behavior of endocrine glands (D44)
- Neoplasm of uncertain behavior of female genital organs (D39
- Neoplasm of uncertain behavior of male genital organs (D40)
- Neoplasm of uncertain behavior of meninges (D42)
- Neoplasm of uncertain behavior of middle ear and respiratory
- Neoplasm of uncertain behavior of oral cavity and digestive
- Neoplasm of uncertain behavior of other and unspecified site
- Neoplasm of uncertain behavior of urinary organs (D41)
- Other neoplasms of uncertain behavior of lymphoid, hematopoi
D43.0 - Neoplasm of uncertain behavior of brain, supratentorial Billable
D43.1 - Neoplasm of uncertain behavior of brain, infratentorial Billable
D43.2 - Neoplasm of uncertain behavior of brain, unspecified Billable
D43.3 - Neoplasm of uncertain behavior of cranial nerves Billable
D43.4 - Neoplasm of uncertain behavior of spinal cord Billable
D43.8 - Neoplasm of uncertain behavior of other specified parts of central nervous system Billable
D43.9 - Neoplasm of uncertain behavior of central nervous system, unspecified Billable
D44.0 - Neoplasm of uncertain behavior of thyroid gland Billable
D44.1 - Neoplasm of uncertain behavior of adrenal gland Non-Billable
D44.2 - Neoplasm of uncertain behavior of parathyroid gland Billable
D44.3 - Neoplasm of uncertain behavior of pituitary gland Billable
D44.4 - Neoplasm of uncertain behavior of craniopharyngeal duct Billable
D44.5 - Neoplasm of uncertain behavior of pineal gland Billable
D44.6 - Neoplasm of uncertain behavior of carotid body Billable
D44.7 - Neoplasm of uncertain behavior of aortic body and other paraganglia Billable
D44.9 - Neoplasm of uncertain behavior of unspecified endocrine gland Billable
D39.0 - Neoplasm of uncertain behavior of uterus Billable
D39.1 - Neoplasm of uncertain behavior of ovary Non-Billable
D39.2 - Neoplasm of uncertain behavior of placenta Billable
D39.8 - Neoplasm of uncertain behavior of other specified female genital organs Billable
D39.9 - Neoplasm of uncertain behavior of female genital organ, unspecified Billable
D38.0 - Neoplasm of uncertain behavior of larynx Billable
D38.1 - Neoplasm of uncertain behavior of trachea, bronchus and lung Billable
D38.2 - Neoplasm of uncertain behavior of pleura Billable
D38.3 - Neoplasm of uncertain behavior of mediastinum Billable
D38.4 - Neoplasm of uncertain behavior of thymus Billable
D38.5 - Neoplasm of uncertain behavior of other respiratory organs Billable
D38.6 - Neoplasm of uncertain behavior of respiratory organ, unspecified Billable
D37.01 - Neoplasm of uncertain behavior of lip Billable
D37.02 - Neoplasm of uncertain behavior of tongue Billable
D37.030 - Neoplasm of uncertain behavior of the parotid salivary glands Billable
D37.031 - Neoplasm of uncertain behavior of the sublingual salivary glands Billable
D37.032 - Neoplasm of uncertain behavior of the submandibular salivary glands Billable
D37.039 - Neoplasm of uncertain behavior of the major salivary glands, unspecified Billable
D37.04 - Neoplasm of uncertain behavior of the minor salivary glands Billable
D37.05 - Neoplasm of uncertain behavior of pharynx Billable
D37.09 - Neoplasm of uncertain behavior of other specified sites of the oral cavity Billable
D37.1 - Neoplasm of uncertain behavior of stomach Billable
D37.2 - Neoplasm of uncertain behavior of small intestine Billable
D37.3 - Neoplasm of uncertain behavior of appendix Billable
D37.4 - Neoplasm of uncertain behavior of colon Billable
D37.5 - Neoplasm of uncertain behavior of rectum Billable
D37.6 - Neoplasm of uncertain behavior of liver, gallbladder and bile ducts Billable
D37.8 - Neoplasm of uncertain behavior of other specified digestive organs Billable
D37.9 - Neoplasm of uncertain behavior of digestive organ, unspecified Billable
D48.0 - Neoplasm of uncertain behavior of bone and articular cartilage Billable
D48.1 - Neoplasm of uncertain behavior of connective and other soft tissue Non-Billable
D48.2 - Neoplasm of uncertain behavior of peripheral nerves and autonomic nervous system Billable
D48.3 - Neoplasm of uncertain behavior of retroperitoneum Billable
D48.4 - Neoplasm of uncertain behavior of peritoneum Billable
D48.5 - Neoplasm of uncertain behavior of skin Billable
D48.6 - Neoplasm of uncertain behavior of breast Non-Billable
D48.7 - Neoplasm of uncertain behavior of other specified sites Billable
D48.9 - Neoplasm of uncertain behavior, unspecified Billable
D41.0 - Neoplasm of uncertain behavior of kidney Non-Billable
D41.1 - Neoplasm of uncertain behavior of renal pelvis Non-Billable
D41.2 - Neoplasm of uncertain behavior of ureter Non-Billable
D41.3 - Neoplasm of uncertain behavior of urethra Billable
D41.4 - Neoplasm of uncertain behavior of bladder Billable
D41.8 - Neoplasm of uncertain behavior of other specified urinary organs Billable
D41.9 - Neoplasm of uncertain behavior of unspecified urinary organ Billable
