ICD-10-CM D49: Neoplasms of unspecified behavior

ICD-10-CM Diagnosis Code (2025)

Official Description for D49

Neoplasms of unspecified behavior

Coding Notes & Guidelines for D49

Includes Notes
  • 'growth' NOS
  • neoplasm NOS
  • new growth NOS
  • tumor NOS
Excludes1: Not Coded Here

neoplasms of uncertain behavior (D37-D44, D48)

Excludes1: Not Coded Here
  • neoplasm of unspecified behavior of margin of anus (D49.2)
  • neoplasm of unspecified behavior of perianal skin (D49.2)
  • neoplasm of unspecified behavior of skin of anus (D49.2)
Excludes1: Not Coded Here
  • neoplasm of unspecified behavior of anal canal (D49.0)
  • neoplasm of unspecified behavior of anus NOS (D49.0)
  • neoplasm of unspecified behavior of bone marrow (D49.89)
  • neoplasm of unspecified behavior of cartilage of larynx (D49.1)
  • neoplasm of unspecified behavior of cartilage of nose (D49.1)
  • neoplasm of unspecified behavior of connective tissue of breast (D49.3)
  • neoplasm of unspecified behavior of skin of genital organs (D49.59)
  • neoplasm of unspecified behavior of vermilion border of lip (D49.0)
Excludes1: Not Coded Here

neoplasm of unspecified behavior of skin of breast (D49.2)

Excludes1: Not Coded Here
  • neoplasm of unspecified behavior of cerebral meninges (D49.7)
  • neoplasm of unspecified behavior of cranial nerves (D49.7)
Excludes1: Not Coded Here

neoplasm of unspecified behavior of peripheral, sympathetic, and parasympathetic nerves and ganglia (D49.2)

Excludes1: Not Coded Here
  • neoplasm of unspecified behavior of eyelid (skin) (D49.2)
  • neoplasm of unspecified behavior of eyelid cartilage (D49.2)
  • neoplasm of unspecified behavior of great vessels (D49.2)
  • neoplasm of unspecified behavior of optic nerve (D49.7)
Inclusion Terms
  • Dark area on retina
  • Retinal freckle

Child Codes (More Specific Codes for D49):

D49.0 - Neoplasm of unspecified behavior of digestive system D49.1 - Neoplasm of unspecified behavior of respiratory system D49.2 - Neoplasm of unspecified behavior of bone, soft tissue, and skin D49.3 - Neoplasm of unspecified behavior of breast D49.4 - Neoplasm of unspecified behavior of bladder D49.5 - Neoplasm of unspecified behavior of other genitourinary organs D49.51 - Neoplasm of unspecified behavior of kidney D49.511 - Neoplasm of unspecified behavior of right kidney D49.512 - Neoplasm of unspecified behavior of left kidney D49.519 - Neoplasm of unspecified behavior of unspecified kidney D49.59 - Neoplasm of unspecified behavior of other genitourinary organ D49.6 - Neoplasm of unspecified behavior of brain D49.7 - Neoplasm of unspecified behavior of endocrine glands and other parts of nervous system D49.8 - Neoplasm of unspecified behavior of other specified sites D49.81 - Neoplasm of unspecified behavior of retina and choroid D49.89 - Neoplasm of unspecified behavior of other specified sites D49.9 - Neoplasm of unspecified behavior of unspecified site

About ICD-10-CM Code D49 (Neoplasms of unspecified behavior)

ICD-10-CM code D49 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM D49 became effective on October 1, 2024.

This page provides detailed information about D49 - Neoplasms of unspecified behavior. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Neoplasms of unspecified behavior.