Chronic Obstructive Pulmonary Disease (COPD) HCC Coding Guide
Chronic Obstructive Pulmonary Disease (COPD) (e.g. J44.0) maps to HCC 280 (Chronic Obstructive Pulmonary Disease, Interstitial Lung Disorders, and Other Chronic Lung Disorders) under the CMS-HCC V28 risk adjustment model, with a community, non-dual, aged RAF weight of 0.319; V28 reached 100% phase-in for payment year 2026. J98.4, other disorders of lung, is non-HCC under V28. It can also map to HCC 213 (Cardio-Respiratory Failure and Shock) when the documentation supports those manifestations.
Complete HCC coding guide for COPD (J44.x) including ICD-10 to HCC mapping, V28 RAF weights, documentation tips, and exacerbation coding.
Medically reviewed by Jess P., CPC · Reviewed: May 9, 2026 · Updated for CMS-HCC V28 and FY2026 ICD-10-CM
Quick Facts
HCC Categories
HCC 213, Cardio-Respiratory Failure and Shock
HCC 280, Chronic Obstructive Pulmonary Disease, Interstitial Lung Disorders, and Other Chronic Lung Disorders
RAF Weight Range
0.319 to 0.370
Community, non-dual, aged (V28)
Model
CMS-HCC V28 (PY2026, 100% phase-in)
9 ICD-10 codes map to payment HCCs
What HCC category does Chronic Obstructive Pulmonary Disease (COPD) map to under V28?
Chronic obstructive pulmonary disease affects over 16 million Americans and is a common HCC condition in risk adjustment. COPD encompasses emphysema and chronic bronchitis, coded primarily under J44 and J43. Under CMS-HCC V28, these COPD codes map to HCC 280 (Chronic Obstructive Pulmonary Disease, Interstitial Lung Disorders, and Other Chronic Lung Disorders), which carries a community non-dual aged RAF of 0.319. Proper coding requires documenting the type of COPD, current severity, and exacerbation status. Watch for acute or acute-on-chronic respiratory failure, because those respiratory failure codes map separately to HCC 213 (Cardio-Respiratory Failure and Shock, RAF 0.37), not to the COPD category. Capturing both, when documented, reflects the full chronic and acute burden.
ICD-10 to HCC Mapping
| ICD-10 Code | Description | Billable | HCC Mapping |
|---|---|---|---|
| J44.0 | Chronic obstructive pulmonary disease with (acute) lower respiratory infection | Yes | HCC 280 |
| J44.1 | Chronic obstructive pulmonary disease with (acute) exacerbation | Yes | HCC 280 |
| J44.9 | Chronic obstructive pulmonary disease, unspecified | Yes | HCC 280 |
| J43.9 | Emphysema, unspecified | Yes | HCC 280 |
| J43.1 | Panlobular emphysema | Yes | HCC 280 |
| J43.2 | Centrilobular emphysema | Yes | HCC 280 |
| J44.89 | Other specified chronic obstructive pulmonary disease | Yes | HCC 280 |
| J96.10 | Chronic respiratory failure, unspecified whether with hypoxia or hypercapnia | Yes | HCC 213 |
| J96.90 | Respiratory failure, unspecified, unspecified whether with hypoxia or hypercapnia | Yes | HCC 213 |
| J98.4 | Other disorders of lung | Yes | No HCC (not risk-adjusting under V28) |
RAF weights are community, non-dual, aged base coefficients from the CMS-HCC V28 model (PY2026). Verify against the latest CMS rate announcement for payment calculations.
HCC Buddy maps Chronic Obstructive Pulmonary Disease (COPD) from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Documentation Tips
Specify the type of COPD when known, emphysema, chronic bronchitis, or COPD with asthma overlap (J44.x with J45.x).
Document acute exacerbation vs. stable disease at every encounter, J44.1 captures exacerbation status.
Record current oxygen therapy and flow rate, and document long-term oxygen dependence with Z99.81.
Include the most recent pulmonary function test (PFT) results with FEV1/FVC ratio and FEV1 percent predicted.
Document any co-occurring respiratory failure (J96.x) as a separate condition when present during exacerbation.
Note tobacco use history and current status with the appropriate Z87.891 or F17.2x code.
Document the treatment plan including bronchodilators, inhaled corticosteroids, and pulmonary rehabilitation to satisfy MEAT criteria.
When COPD is complicated by pneumonia or lower respiratory infection, use J44.0 as the primary code.
Common Coding Mistakes
Defaulting to J44.9 (unspecified) when the provider documents an acute exacerbation, J44.1 should be used.
Failing to code respiratory failure separately when it is documented alongside a COPD exacerbation.
Not capturing emphysema-specific codes (J43.x) when documented, as they also map to the COPD HCC.
Missing the long-term oxygen use code (Z99.81) which, while not an HCC itself, supports medical necessity for the COPD diagnosis.
V24 to V28 Changes
Under CMS-HCC V28, COPD codes such as J44 and J43 map to HCC 280, the broader "Chronic Obstructive Pulmonary Disease, Interstitial Lung Disorders, and Other Chronic Lung Disorders" category that also captures interstitial and other chronic lung conditions. Compared with the prior V24 model, the category was renumbered and its scope and RAF weight recalibrated, so coders should rely on current V28 crosswalks rather than older mappings. A key teaching point: COPD itself does not pull respiratory failure value. When acute or acute-on-chronic respiratory failure is documented, that code lands in HCC 213 (Cardio-Respiratory Failure and Shock), an additive category alongside HCC 280. Code each condition to its own true HCC for complete, accurate capture.
Related Conditions
Related references
Sources
RAF weights are community, non-dual, aged base coefficients from the CMS-HCC V28 model (PY2026). Verify against the latest CMS Rate Announcement for payment.
Verified current to CMS-HCC V28, payment year 2026 — last reviewed May 9, 2026.
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