ICD-10 J40 Conversion to ICD-9 490
ICD-10 to ICD-9 Crossover Result
ICD-10 Code J40 representing "Bronchitis, not specified as acute or chronic" can be backward-mapped to its ICD-9 equivalent 490: "Bronchitis NOS". The crossover is not approximate meaning it is an exact match conversion. This crossover conversion was done using the latest General Equivalence Mappings (GEMs), please review the conversion table below for additional details.
| Source ICD-10 Code | Target ICD-9 Code | |
|---|---|---|
| J40 Bronchitis, not specified as acute or chronic | 490 Bronchitis NOS |
About the General Equivalence Mappings Crossover Tool
The General Equivalence Mappings (GEMs) is a crossover mapping tool designed to facilitate the transition between the ICD-9 and ICD-10 coding systems. This crossover tool was developed by the Centers for Medicare & Medicaid Services (CMS) and the National Center for Health Statistics (NCHS), GEMs serve as a standardized reference for converting diagnosis codes between the two major ICD versions.
The GEMs were created to support healthcare organizations, providers, and payers in the adoption of ICD-10 by providing a structured framework for mapping codes accurately. GEMs are particularly useful for legacy data conversion, research, and system updates to ensure compliance with ICD-10 requirements. They can be used in both forward mapping (ICD-9 to ICD-10) and backward mapping (ICD-10 to ICD-9), making them versatile for various applications, such as auditing, reimbursement analysis, and cross-system compatibility.
Users need to use their best judgements when using this conversion tool and carefully interpret the mappings, as not all conversions are one-to-one; some codes may require additional clinical context for accuracy.
