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ICD-10-CM Code J42
Unspecified chronic bronchitis

BILLABLE
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
| ICD-10 from 2011 - 2016

J42 is a billable ICD code used to specify a diagnosis of unspecified chronic bronchitis. A 'billable code' is detailed enough to be used to specify a medical diagnosis.


The ICD code J42 is used to code Chronic obstructive pulmonary disease

Chronic obstructive pulmonary disease (COPD), also known as chronic obstructive lung disease (COLD) and chronic obstructive airway disease (COAD), among others, is a type of obstructive lung disease characterized by chronically poor airflow. It typically worsens over time. The main symptoms include shortness of breath, cough, and sputum production. Most people with chronic bronchitis have COPD.

Specialty: Pulmonology
MeSH Codes: , , , , ,
ICD 9 Codes: 490, 491, 492, 494, 495, 496

Gross pathology of a lung showing centrilobular-type emphysema characteristic of smoking. This close-up of the fixed, cut lung surface shows multiple cavities filled with heavy black carbon deposits.

Source: Wikipedia

Coding Notes for J42 Info for medical coders on how to properly use this ICD-10 code

Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive.
Chronic bronchitis NOS
Chronic tracheitis
Chronic tracheobronchitis
Additional Code Note:
Use Additional Code
Use Additional Code note means a second code must be used in conjunction with this code. Codes with this note are Etiology codes and must be followed by a Manifestation code or codes.
Code to identify:
Exposure to environmental tobacco smoke See code Z77.22
Exposure to tobacco smoke in the perinatal period See code P96.81
History of tobacco use See code Z87.891
Occupational exposure to environmental tobacco smoke See code Z57.31
Tobacco dependence See code F17.-
Tobacco use See code Z72.0
Code Type-1 Excludes:
Type-1 Excludes
Type-1 Excludes mean the conditions excluded are mutually exclusive and should never be coded together. Excludes 1 means "do not code here."
Chronic asthmatic bronchitis - instead, use code J44.-
Chronic bronchitis with airways obstruction - instead, use code J44.-
Chronic emphysematous bronchitis - instead, use code J44.-
Chronic obstructive pulmonary disease NOS - instead, use code J44.9
Simple and mucopurulent chronic bronchitis - instead, use code J41.-

MS-DRG Mapping

  • DRG Group #190-192 - Chronic obstructive pulmonary disease with MCC.
  • DRG Group #190-192 - Chronic obstructive pulmonary disease with CC.
  • DRG Group #190-192 - Chronic obstructive pulmonary disease without CC or MCC.

Related Concepts SNOMET-CT

  • >= 65.0 years
  • Age at onset of clinical finding (observable entity)

Coding Advice SNOMET-CT

  • Consider additional code to identify specific condition or disease

Equivalent ICD-9 Code GENERAL EQUIVALENCE MAPPINGS (GEM)

Unspecified chronic bronchitis (exact match)

This is the official exact match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that in all cases where the ICD9 code 491.9 was previously used, J42 is the appropriate modern ICD10 code.


** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/J42