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ICD-10 Code J44.1: Chronic obstructive pulmonary disease with (acute) exacerbation

J44.1 is a billable ICD-10 diagnosis code used to classify Chronic obstructive pulmonary disease with (acute) exacerbation in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the respiratory system (J00-J99).

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the respiratory system (J00-J99).

đź“‹Clinical overview

This ICD-10 code is commonly used when documentation describes obstructive airway disease such as COPD or asthma. The most accurate code depends on whether the record identifies COPD, asthma severity or persistence, acute exacerbation, or status asthmaticus.

When is it used?

  • May be used when a clinician documents chronic obstructive pulmonary disease with (acute) exacerbation in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

đź©şClinical context

When commonly used
  • Primary care, pulmonary, emergency, and inpatient documentation where wheezing, airflow obstruction, COPD management, or asthma control is part of the active encounter.
  • Chronic-disease follow-up, utilization review, and discharge workflows where exacerbation status, severity, or persistent-control detail affects the final code choice.
Common workup
  • Common related testing on this page includes Spirometry, Arterial blood gas.
  • Related procedures or service context already linked on this page include Nebulizer treatment, Pulmonary rehabilitation.
Common management context
  • COPD and asthma follow-up often includes symptom review, inhaler or nebulizer medication reconciliation, trigger assessment, pulmonary testing context, and monitoring for flare-ups or exacerbations.
  • Documentation usually becomes more specific when the chart identifies acute exacerbation, persistent asthma severity, status asthmaticus, smoking exposure, or chronic bronchitis/emphysema context.
  • Specialist context already linked on this page includes Pulmonologist, General Physician.

🔍Key distinctions

Important notes
  • COPD and asthma coding is often driven by whether the chart documents stable disease, acute exacerbation, severity, persistence, or status asthmaticus.
  • Related respiratory conditions such as pneumonia, acute bronchitis, tobacco exposure, or oxygen dependence may affect the overall clinical picture but can still require separate coding.
Important exclusions
  • chronic obstructive pulmonary disease [COPD] with acute bronchitis (J44.0)
  • lung diseases due to external agents (J60-J70)
Related codes to consider
J44.0Chronic obstructive pulmonary disease with (acute) lower respiratory infection
Related obstructive-airway ICD-10 code; documentation often becomes more specific when the chart identifies COPD, asthma severity, acute exacerbation, or status asthmaticus.
J44.8Other specified chronic obstructive pulmonary disease
Related obstructive-airway ICD-10 code; documentation often becomes more specific when the chart identifies COPD, asthma severity, acute exacerbation, or status asthmaticus.
J44.9Chronic obstructive pulmonary disease, unspecified
Related obstructive-airway ICD-10 code; documentation often becomes more specific when the chart identifies COPD, asthma severity, acute exacerbation, or status asthmaticus.

Code hierarchy

chapter
10Diseases of the respiratory system (J00-J99)
block
J40-J4AChronic lower respiratory diseases
category
J44Other chronic obstructive pulmonary disease
currentJ44

Official coding notes

Inclusion terms
  • Decompensated COPD
  • Decompensated COPD with (acute) exacerbation
Excludes2 (may code together if documented)
  • chronic obstructive pulmonary disease [COPD] with acute bronchitis (J44.0)
  • lung diseases due to external agents (J60-J70)

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

PulmonologistGeneral Physician

Related tests

Spirometry
Commonly used to assess airflow limitation in COPD evaluation and follow-up.
Arterial blood gas
May be relevant in selected COPD cases when oxygenation or ventilation is being assessed.

Related procedures

Nebulizer treatment
May appear in symptomatic COPD care pathways.
Pulmonary rehabilitation
Commonly part of longer-term COPD management pathways.

Coverage-related procedures and services

CPT 87631high
INFECTIOUS AGENT DETECTION BY NUCLEIC ACID (DNA OR RNA); RESPIRATORY VIRUS (EG, ADENOVIRUS, INFLUENZA VIRUS, CORONAVIRUS, METAPNEUMOVIRUS, PARAINFLUENZA VIRUS, RESPIRATORY SYNCYTIAL VIRUS, RHINOVIRUS), INCLUDES MULTIPLEX REVERSE TRANSCRIPTION, WHEN PERFORMED, AND MULTIPLEX AMPLIFIED PROBE TECHNIQUE, MULTIPLE TYPES OR SUBTYPES, 3-5 TARGETS
Source: CMS coverage guidance
CPT 87636high
INFECTIOUS AGENT DETECTION BY NUCLEIC ACID (DNA OR RNA); SEVERE ACUTE RESPIRATORY SYNDROME CORONAVIRUS 2 (SARS-COV-2) (CORONAVIRUS DISEASE [COVID-19]) AND INFLUENZA VIRUS TYPES A AND B, MULTIPLEX AMPLIFIED PROBE TECHNIQUE
Source: CMS coverage guidance
CPT 87637high
INFECTIOUS AGENT DETECTION BY NUCLEIC ACID (DNA OR RNA); SEVERE ACUTE RESPIRATORY SYNDROME CORONAVIRUS 2 (SARS-COV-2) (CORONAVIRUS DISEASE [COVID-19]), INFLUENZA VIRUS TYPES A AND B, AND RESPIRATORY SYNCYTIAL VIRUS, MULTIPLEX AMPLIFIED PROBE TECHNIQUE
Source: CMS coverage guidance
CPT 87801high
INFECTIOUS AGENT DETECTION BY NUCLEIC ACID (DNA OR RNA), MULTIPLE ORGANISMS; AMPLIFIED PROBE(S) TECHNIQUE
Source: CMS coverage guidance
CPT 97034high
APPLICATION OF A MODALITY TO 1 OR MORE AREAS; CONTRAST BATHS, EACH 15 MINUTES
Source: CMS coverage guidance
CPT 97032high
APPLICATION OF A MODALITY TO 1 OR MORE AREAS; ELECTRICAL STIMULATION (MANUAL), EACH 15 MINUTES
Source: CMS coverage guidance

Coding guidelines

Compatibility

Legacy and official ICD code match exactly.
Legacy codes
J44.1

Common synonyms

Chronic obstructive pulmonary disease with (acute) exacerbationChronic obstructive pulmonary disease withChronic obstructive pulmonary disease with acute exacerbation

Frequently asked questions

Code details

CodeJ44.1
SystemICD10
Display nameChronic obstructive pulmonary disease with (acute) exacerbation
ChapterDiseases of the respiratory system (J00-J99)
BlockChronic lower respiratory diseases

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Asthma, asthmatic(bronchial) (catarrh) (spasmodic)Asthma, asthmatic(bronchial) (catarrh) (spasmodic)Asthma, asthmatic(bronchial) (catarrh) (spasmodic)Bronchitis(diffuse) (fibrinous) (hypostatic) (infective) (membranous)Disease, diseasedDisease, diseasedDisease, diseasedDisease, diseasedDisease, diseasedDisease, diseasedDisease, diseased

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.