D49.1 is the authoritative medical code for Neoplasm of unspecified behavior of respiratory system. This classification is used in medical billing and clinical recording to specify the clinical criteria for neoplasm of unspecified behavior of respiratory system (ICD-10-CM D49.1), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Neoplasm of unspecified behavior of respiratory system is a billable ICD-10-CM diagnosis code D49.1. Includes: 'growth' NOS; neoplasm NOS; new growth NOS; tumor NOS. Excludes2 (not included here): neoplasms of uncertain behavior (D37-D44, D48).
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for D49.1 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- 'growth' NOS
- neoplasm NOS
- new growth NOS
- tumor NOS
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- neoplasms of uncertain behavior (D37-D44, D48)
Frequently Asked Questions (FAQ) & Clinical Guidance
Can D49.1 be reported alongside related conditions?
Per Excludes2 instructions, D49.1 and the following may both be reported when both are present: neoplasms of uncertain behavior (D37-D44, D48).
Codes in This Family (13)
Official ICD-10-CM classifications in the same code family as D49.1, with their registry titles.
- D49 — Neoplasms of unspecified behavior
- D49.0 — Neoplasm of unspecified behavior of digestive 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
- D49.511 — 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
- D49.6 — 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
- D49.9 — Neoplasm of unspecified behavior of unspecified site
Neoplasm Table Sites (104)
Anatomical sites from the official ICD-10-CM Table of Neoplasms that map to this code, with the matching behavior column.
- Neoplasm, neoplastic, antrum (Highmore) (maxillary) — Unspecified Behavior
- Neoplasm, neoplastic, antrum (Highmore) (maxillary), tympanicum — Unspecified Behavior
- Neoplasm, neoplastic, aryepiglottic fold, laryngeal aspect — Unspecified Behavior
- Neoplasm, neoplastic, arytenoid (cartilage) — Unspecified Behavior
- Neoplasm, neoplastic, auditory, canal (external) (skin), internal — Unspecified Behavior
- Neoplasm, neoplastic, auditory, tube — Unspecified Behavior
- Neoplasm, neoplastic, bronchiogenic, bronchogenic (lung) — Unspecified Behavior
- Neoplasm, neoplastic, bronchiole — Unspecified Behavior
- Neoplasm, neoplastic, bronchus — Unspecified Behavior
- Neoplasm, neoplastic, bronchus, carina — Unspecified Behavior
- Neoplasm, neoplastic, bronchus, lower lobe of lung — Unspecified Behavior
- Neoplasm, neoplastic, bronchus, main — Unspecified Behavior
- Neoplasm, neoplastic, bronchus, middle lobe of lung — Unspecified Behavior
- Neoplasm, neoplastic, bronchus, upper lobe of lung — Unspecified Behavior
- Neoplasm, neoplastic, carina (bronchus) — Unspecified Behavior
- Neoplasm, neoplastic, cartilage NEC (articular) (joint), arytenoid — Unspecified Behavior
- Neoplasm, neoplastic, cartilage NEC (articular) (joint), bronchi — Unspecified Behavior
- Neoplasm, neoplastic, cartilage NEC (articular) (joint), cricoid — Unspecified Behavior
- Neoplasm, neoplastic, cartilage NEC (articular) (joint), cuneiform — Unspecified Behavior
- Neoplasm, neoplastic, cartilage NEC (articular) (joint), epiglottis — Unspecified Behavior
- Neoplasm, neoplastic, cartilage NEC (articular) (joint), larynx, laryngeal — Unspecified Behavior
- Neoplasm, neoplastic, cartilage NEC (articular) (joint), nose, nasal — Unspecified Behavior
- Neoplasm, neoplastic, cartilage NEC (articular) (joint), thyroid — Unspecified Behavior
- Neoplasm, neoplastic, cartilage NEC (articular) (joint), trachea — Unspecified Behavior
- Neoplasm, neoplastic, cavity, nasal — Unspecified Behavior
- Neoplasm, neoplastic, cavity, tympanic — Unspecified Behavior
- Neoplasm, neoplastic, commissure, laryngeal — Unspecified Behavior
- Neoplasm, neoplastic, concha, nose — Unspecified Behavior
- Neoplasm, neoplastic, cord (true) (vocal) — Unspecified Behavior
- Neoplasm, neoplastic, cricoid, cartilage — Unspecified Behavior
- Neoplasm, neoplastic, cuneiform cartilage — Unspecified Behavior
- Neoplasm, neoplastic, ear (external), inner — Unspecified Behavior
- Neoplasm, neoplastic, ear (external), middle — Unspecified Behavior
- Neoplasm, neoplastic, epiglottis — Unspecified Behavior
- Neoplasm, neoplastic, epiglottis, cartilage — Unspecified Behavior
- Neoplasm, neoplastic, epiglottis, posteriorsurface (laryngeal) — Unspecified Behavior
- Neoplasm, neoplastic, epiglottis, suprahyoid portion — Unspecified Behavior
- Neoplasm, neoplastic, ethmoid (sinus) — Unspecified Behavior
- Neoplasm, neoplastic, eustachian tube — Unspecified Behavior
- Neoplasm, neoplastic, frontal, sinus — Unspecified Behavior
- Neoplasm, neoplastic, glottis — Unspecified Behavior
- Neoplasm, neoplastic, hilus of lung — Unspecified Behavior
- Neoplasm, neoplastic, interarytenoid fold, laryngeal aspect — Unspecified Behavior
- Neoplasm, neoplastic, larynx, laryngeal NEC — Unspecified Behavior
- Neoplasm, neoplastic, larynx, laryngeal NEC, aryepiglottic fold — Unspecified Behavior
- Neoplasm, neoplastic, larynx, laryngeal NEC, cartilage (arytenoid) (cricoid) (cuneiform) (thyroid) — Unspecified Behavior
- Neoplasm, neoplastic, larynx, laryngeal NEC, commissure (anterior) (posterior) — Unspecified Behavior
- Neoplasm, neoplastic, larynx, laryngeal NEC, extrinsic NEC — Unspecified Behavior
- Neoplasm, neoplastic, larynx, laryngeal NEC, interarytenoid fold — Unspecified Behavior
- Neoplasm, neoplastic, larynx, laryngeal NEC, intrinsic — Unspecified Behavior
- Neoplasm, neoplastic, larynx, laryngeal NEC, ventricular band — Unspecified Behavior
- Neoplasm, neoplastic, lingula, lung — Unspecified Behavior
- Neoplasm, neoplastic, lung — Unspecified Behavior
- Neoplasm, neoplastic, lung, azygos lobe — Unspecified Behavior
- Neoplasm, neoplastic, lung, carina — Unspecified Behavior
- Neoplasm, neoplastic, lung, hilus — Unspecified Behavior
- Neoplasm, neoplastic, lung, lingula — Unspecified Behavior
- Neoplasm, neoplastic, lung, lobe NEC — Unspecified Behavior
- Neoplasm, neoplastic, lung, lower lobe — Unspecified Behavior
- Neoplasm, neoplastic, lung, main bronchus — Unspecified Behavior
- Neoplasm, neoplastic, lung, middle lobe — Unspecified Behavior
- Neoplasm, neoplastic, lung, upper lobe — Unspecified Behavior
- Neoplasm, neoplastic, mastoid (air cells) (antrum) (cavity) — Unspecified Behavior
- Neoplasm, neoplastic, maxilla, maxillary (superior), antrum — Unspecified Behavior
- Neoplasm, neoplastic, maxilla, maxillary (superior), sinus — Unspecified Behavior
- Neoplasm, neoplastic, mucosa, nasal — Unspecified Behavior
- Neoplasm, neoplastic, nares, naris (anterior) (posterior) — Unspecified Behavior
- Neoplasm, neoplastic, nose, nasal, cartilage — Unspecified Behavior
- Neoplasm, neoplastic, nose, nasal, cavity — Unspecified Behavior
- Neoplasm, neoplastic, nose, nasal, fossa — Unspecified Behavior
- Neoplasm, neoplastic, nose, nasal, internal — Unspecified Behavior
- Neoplasm, neoplastic, nose, nasal, mucosa — Unspecified Behavior
- Neoplasm, neoplastic, nose, nasal, septum — Unspecified Behavior
- Neoplasm, neoplastic, nose, nasal, turbinate (mucosa) — Unspecified Behavior
- Neoplasm, neoplastic, nose, nasal, vestibule — Unspecified Behavior
- Neoplasm, neoplastic, nostril — Unspecified Behavior
- Neoplasm, neoplastic, pleura, pleural (cavity) — Unspecified Behavior
- Neoplasm, neoplastic, pleura, pleural (cavity), parietal — Unspecified Behavior
- Neoplasm, neoplastic, pleura, pleural (cavity), visceral — Unspecified Behavior
- Neoplasm, neoplastic, pulmonary — Unspecified Behavior
- Neoplasm, neoplastic, respiratory, organs or system NEC — Unspecified Behavior
- Neoplasm, neoplastic, respiratory, tract NEC — Unspecified Behavior
- Neoplasm, neoplastic, respiratory, tract NEC, upper — Unspecified Behavior
- Neoplasm, neoplastic, septum, nasal — Unspecified Behavior
- Neoplasm, neoplastic, sinus (accessory) — Unspecified Behavior
- Neoplasm, neoplastic, sinus (accessory), ethmoidal — Unspecified Behavior
- Neoplasm, neoplastic, sinus (accessory), frontal — Unspecified Behavior
- Neoplasm, neoplastic, sinus (accessory), maxillary — Unspecified Behavior
- Neoplasm, neoplastic, sinus (accessory), nasal, paranasal NEC — Unspecified Behavior
- Neoplasm, neoplastic, sinus (accessory), sphenoid — Unspecified Behavior
- Neoplasm, neoplastic, sphenoid — Unspecified Behavior
- Neoplasm, neoplastic, sphenoid, sinus — Unspecified Behavior
- Neoplasm, neoplastic, subglottis, subglottic — Unspecified Behavior
- Neoplasm, neoplastic, subpleural — Unspecified Behavior
- Neoplasm, neoplastic, supraglottis — Unspecified Behavior
- Neoplasm, neoplastic, thyroid (gland), cartilage — Unspecified Behavior
- Neoplasm, neoplastic, trachea (cartilage) (mucosa) — Unspecified Behavior
- Neoplasm, neoplastic, tracheobronchial — Unspecified Behavior
- Neoplasm, neoplastic, turbinate (bone), nasal — Unspecified Behavior
- Neoplasm, neoplastic, tympanic cavity — Unspecified Behavior
- Neoplasm, neoplastic, ventricular band of larynx — Unspecified Behavior
- Neoplasm, neoplastic, vestibule, nose — Unspecified Behavior
- Neoplasm, neoplastic, vocal cords (true) — Unspecified Behavior
- Neoplasm, neoplastic, windpipe — Unspecified Behavior
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code D48.1
Neoplasm of uncertain behavior of connective and other soft tissue
ICD Code D51.1
Vitamin B12 deficiency anemia due to selective vitamin B12 malabsorption with proteinuria