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J44.9 chronic obstructive pulmonary disease

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E11.65 Search

E11.65 Billable

V28 · PY2026

HCC 38

V24 · PY2025

HCC 18

CNA ref

0.166

ehr-chart · coder view

J44.9

J44.9Billable

V28HCC 280

CNA ref0.319

Code card preview

FY2026 · APR UPDATE

J44.9 Billable

Chronic obstructive pulmonary disease, unspecified
Illustrative card. CNA coefficient references are not member RAF scores.

V28 · PY2026

HCC 280

CNA ref 0.319

V24 · PY2025

HCC 111

Historical reference

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Current V28 and historical V24 reference context

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E11.65 searchHCC valuesCode path

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Encoder preview · PY2026 V28 CNA references

E11.65 Billable

Type 2 diabetes mellitus with hyperglycemia

V28 · PY2026

HCC 38

V24 · PY2025

HCC 18

CNA ref

0.166

CODE PATH E11›E11.6›E11.65

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Buddy answers code-aware questions with HCC context, documentation focus, and the next review step.

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Ask Buddy preview · PY2026 V28

Does E11.65 map for V28, and what should I check?

Buddy

Maps to CMS-HCC V28 HCC 38.

Confirm the documented diagnosis and ICD-10-CM instructions.

Review the full documentation and applicable coding guidelines.

Code Book

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Tabular listCode pathInline HCC

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Code Book preview · FY2026 April

J44 · Other chronic obstructive pulmonary disease

Chapter Diseases of the respiratory system (J00–J99)

J44 Other chronic obstructive pulmonary disease

J44.0 with (acute) lower respiratory infection

J44.1 with (acute) exacerbation

J44.9 COPD, unspecified Billable HCC 280

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Evidence Checker preview

De-identified note

Assessment referenced. A1c ordered. Medication plan discussed and continued.

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Monitor

Pending

Assess

Pending

Treat

Pending

Illustrative preview. Verify the documented diagnosis and coding rules.

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Ask Buddy ILLUSTRATIVE PREVIEW

Does J44.9 still map under V28, and what should I confirm?

PY2026 V28: HCC 280. CNA coefficient reference 0.319, not a member RAF score.

Confirm the documented diagnosis and ICD-10-CM instructions.

Review the full documentation and applicable coding guidelines.

Source editions

Official references, with the source edition in view.

Check the published edition and effective period. New sources become available after their files and mappings pass verification.

Built from official CMS files

HCC mappings and code-level coefficient references are tied to registered CMS-HCC V28 files. The RAF Calculator requires complete member context and shows no score unless every source and calculation check passes.

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Check the selected ICD-10-CM edition and model. Historical code lookup does not imply support for historical RAF scoring.

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Questions? We have answers.

HCC stands for Hierarchical Condition Category. CMS uses HCC risk adjustment to estimate expected medical cost for Medicare Advantage members based on the diagnoses a provider reports during the year (CMS Risk Adjustment program: https://www.cms.gov/medicare/health-plans/medicareadvtgspecratestats/risk-adjustors).

V24 is the 2020 CMS-HCC model with 86 payment HCCs; V28 is the 2024 model with 115 payment HCCs. For CY2026 non-PACE Medicare Advantage, CMS completed the V28 phase-in and uses 100% V28. PACE has a separate model blend. HCC Buddy shows current PY2026 V28 mapping and historical PY2025 V24 references separately. Sources: CMS December 2024 Report to Congress, Table 2-2 (https://www.cms.gov/files/document/report-congress-risk-adjustment-medicare-advantage-december-2024.pdf#page=29); CMS 2026 Rate Announcement (https://www.cms.gov/newsroom/fact-sheets/2026-medicare-advantage-part-d-rate-announcement).

A member RAF score combines demographic factors with applicable HCC coefficients after model hierarchy and cleanup rules, plus qualifying interaction terms. HCC Buddy's RAF Calculator supports seven continuing-enrollee segments in CMS-HCC V28 for Payment Year 2026 and requires complete member context. It shows no score unless the required source and calculation checks pass. Code-level coefficients are references, not member totals, and historical PY2025 V24 stays reference-only. PACE, new-enrollee, HHS and ESRD scoring are not supported. Source: CMS Risk Adjustment model software (https://www.cms.gov/medicare/payment/medicare-advantage-rates-statistics/risk-adjustment).

Evidence Checker flags documentation gaps and conflicting wording for coder review. MEAT (Monitor, Evaluate, Assess, Treat) is a review mnemonic, not a substitute for the applicable ICD-10-CM guidelines. A flagged or unflagged result does not establish a diagnosis, reportability or audit acceptance.

For the FY2026 April edition, the published HCC Buddy reference includes 74,719 billable ICD-10-CM codes. Of those, 8,016 have a PY2026 V28 mapping, including six codes with a mapping condition. These are code counts, not HCC category counts or member RAF scores. Check the selected edition and source notes on the ICD-10 to HCC mapping page (https://hccbuddy.com/icd10-to-hcc).

Yes. Start Pro and get 7 days to try the full workflow, no card required. Pro is $19.99/month for founding members during the founding window, then $29.99/month after it closes. The annual plan is $199.99/year.

No. HCC Buddy is built for deidentified coding questions, ICD-10-CM codes, and clinical concepts. Do not paste member identifiers, dates of birth, full chart notes, or other patient identifiers into Ask Buddy.