ICD-10-CM › C00-D49 › D49 › D49 Neoplasms of unspecified behavior › D49.9
Neoplasm of unspecified behavior of unspecified site
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
What has happened to this code
Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2007 Added to the draft code set draft Neoplasm of unspecified behavior of unspecified site
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from D49 Neoplasms of unspecified behavior
Excludes2 - not included here
- neoplasms of uncertain behavior (D37-D44, D48)
Includes
- 'growth' NOS
- neoplasm NOS
- new growth NOS
- tumor NOS
Note
- Category D49 classifies by site neoplasms of unspecified morphology and behavior. The term 'mass', unless otherwise stated, is not to be regarded as a neoplastic growth.
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Leukoencephalopathy
- Osteitis > deformans
- Sclerosis, sclerotic > choroid
- Disorder > choroid > degeneration
- Osteitis > deformans > specified NEC
- Paget's disease > osteitis deformans
- Ataxia, ataxy, ataxic > heredofamilial
- Hemorrhage, hemorrhagic > polymyositis
- Ataxia, ataxy, ataxic > family, familial
- Degeneration, degenerative > chorioretinal
- Degeneration, degenerative > Bruch's membrane
- Inflammation, inflamed, inflammatory > nerve NEC
- Neoplasm, neoplastic
- Neuromyopathy > paraneoplastic
- Myelopathy > in > neoplastic disease
- Dermatomyositis > in neoplastic disease
- Encephalopathy > in > neoplastic disease
- Neuropathy, neuropathic > paraneoplastic
- Polyneuropathy > in > neoplastic disease
- Arthropathy > in > neoplastic disease NOS
- Dermatopolymyositis > in neoplastic disease
- Osteitis > deformans > in > neoplastic disease
- Myasthenia > syndrome > in > neoplastic disease
- Syndrome > myasthenic > in > neoplastic disease
- Neoplasm, neoplastic > unknown site or unspecified
- Palsy > cranial nerve > multiple > in > neoplastic disease
- Ataxia, ataxy, ataxic > cerebellar > in > neoplastic disease
- Compression > nerve > root or plexus NOS > neoplastic disease
- Atrophy, atrophic > systemic affecting central nervous system > in > neoplastic disease
Codes in the same group
| Code | Description | Status |
|---|---|---|
| D49.0 | Neoplasm of unspecified behavior of digestive system | Valid |
| D49.1 | Neoplasm of unspecified behavior of respiratory system | Valid |
| D49.2 | Neoplasm of unspecified behavior of bone, soft tissue, and skin | Valid |
| D49.3 | Neoplasm of unspecified behavior of breast | Valid |
| D49.4 | Neoplasm of unspecified behavior of bladder | Valid |
| D49.5 | Neoplasm of unspecified behavior of other genitourinary organs | Not billable |
| D49.6 | Neoplasm of unspecified behavior of brain | Valid |
| D49.7 | Neoplasm of unspecified behavior of endocrine glands and other parts of nervous system | Valid |
| D49.8 | Neoplasm of unspecified behavior of other specified sites | Not billable |