Q34.9

Billable
ChapterQ00–Q99
Ranksubcategory
Official Description

Congenital malformation of respiratory system, unspecified

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99).

Instructional Notes

Includes
  • Congenital absence of respiratory system
  • Congenital anomaly of respiratory system NOS
General instructions are available for the parent sections:
View CH17 NotesView Q34 Notes

Clinical Hierarchy

CH17Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
Q30-Q34Congenital malformations of the respiratory system (Q30-Q34)
Q34Other congenital malformations of respiratory system
Q34.9Congenital malformation of respiratory system, unspecified

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to Q34.9:

categoryQ34
Other congenital malformations of respiratory system
View context instructions
chapterCH17
Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to Q34.9. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

6 raw paths
Absence (of) (organ or part) (complete or partial)1 unique routes
respiratory organ NOS→Q34.9
Anomaly, anomalous (congenital) (unspecified type)1 unique routes
respiratory system→Q34.9
Defect, defective1 unique routes
respiratory system, congenital→Q34.9
Deformity1 unique routes
respiratory system (congenital)→Q34.9
Development1 unique routes
incomplete
respiratory system→Q34.9
Malformation (congenital)1 unique routes
respiratory system→Q34.9

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 154
Other Ear, Nose, Mouth and Throat Diagnoses with MCC
DRG 155
Other Ear, Nose, Mouth and Throat Diagnoses with CC
DRG 156
Other Ear, Nose, Mouth and Throat Diagnoses without CC/MCC
DRG 157
Dental and Oral Diseases with MCC
DRG 158
Dental and Oral Diseases with CC
DRG 159
Dental and Oral Diseases without CC/MCC
DRG 205
Other Respiratory System Diagnoses with MCC
DRG 206
Other Respiratory System Diagnoses without MCC
DRG 795
Normal Newborn

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Congenital malformation of respiratory system, unspecified.

Search PCS Codes