D49.1 — Neoplasm of unspecified behavior of respiratory system
D49.1 is a billable, specific ICD-10-CM code for neoplasm of unspecified behavior of respiratory system. It is valid for submission on a claim.
Other codes that can never be billed with D49.1
These codes carry an Excludes1 note pointing at D49.1. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading D49.1 alone.
- D49.2Neoplasm of unspecified behavior of bone, soft tissue, and skin
Risk adjustment
D49.1 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
D49.1 is named in 18 Medicare coverage policies — 18 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52450Billing and Coding: Paclitaxel (e.g., Taxol®/Abraxane ™)
- A52480Oral Antiemetic Drugs (Replacement for Intravenous Antiemetics) - Policy Article
- A52986Billing and Coding: Biomarkers for Oncology
- A53101Billing and Coding: MolDX: bioTheranostics Cancer TYPE ID® Update
Related codes at this level
Codes that share D49. If D49.1 is not quite right, the correct code is usually one of these.
- D49.0Neoplasm of unspecified behavior of digestive system
- D49.2Neoplasm of unspecified behavior of bone, soft tissue, and skin
- D49.3Neoplasm of unspecified behavior of breast
- D49.4Neoplasm of unspecified behavior of bladder
- D49.5Neoplasm of unspecified behavior of other genitourinary organs
- D49.6Neoplasm of unspecified behavior of brain
- D49.7Neoplasm of unspecified behavior of endocrine glands and other parts of nervous system
- D49.8Neoplasm of unspecified behavior of other specified sites
- D49.9Neoplasm of unspecified behavior of unspecified site
Questions about D49.1
- Is D49.1 a billable ICD-10-CM code?
- Yes. D49.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does D49.1 sit in the tabular list?
- Neoplasms (C00-D49), in the block Neoplasms of unspecified behavior (D49).