What is ICD-10 code D86.0?

D86.0 is the ICD-10-CM diagnosis code for Sarcoidosis of lung. Sarcoidosis is an inflammatory disease where abnormal tissue collections form in the lungs, causing breathing problems and chest discomfort. D86.0 is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. D86.0 is part of the FY2026 ICD-10-CM code set published by the CMS National Center for Health Statistics and used on Medicare, Medicaid, and commercial claims in the United States.

Yes. D86.0 is a billable ICD-10-CM code that can be reported on professional and institutional claims as a primary or secondary diagnosis when the provider documentation supports the specific condition described. Billable codes in ICD-10-CM are coded to the highest level of specificity available for the documented diagnosis. D86.0 is current for fiscal year 2026 and remains in the active CMS ICD-10-CM code set published by the National Center for Health Statistics.

What is the V28 vs V24 difference for D86.0?

CMS phased in the V28 risk adjustment model over payment years 2024 (33%), 2025 (67%), and 2026 (100%), replacing V24. V28 consolidates HCC categories, removes some lower-acuity conditions, and recalibrates RAF weights across the entire model. D86.0 was a payment HCC under V24 (Fibrosis of Lung and Other Chronic Lung Disorders) but the V28 recalibration removed it from the risk adjustment model. Both models can still appear in legacy data and in payer-specific lookback periods.

What should coders know when reporting D86.0?

Specify the stage of pulmonary sarcoidosis if documented (0-IV) Code any associated respiratory complications separately (e.g., pulmonary fibrosis) Because D86.0 maps to a payment HCC, the documentation must also satisfy MEAT criteria (Monitor, Evaluate, Assess, or Treat) for the encounter to count toward the patient's risk adjustment score.

D86.0 ICD-10 Code: Sarcoidosis of lung | Fibrosis

ICD-10-CM Code View

HCC Buddy Code Card

Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.

Code lookupD86.0Effective periodFY2026 Apr Update (Apr 1-Sep 30)

FY 2026 Apr update / Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89) / Certain disorders involving the immune mechanism (D80-D89)

D86.0

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Sarcoidosis of lung

Sarcoidosis is an inflammatory disease where abnormal tissue collections form in the lungs, causing breathing problems and chest discomfort.

Buddy Insight

Sarcoidosis of lung is a chronic granulomatous disease of unknown etiology characterized by non-caseating granulomas in the pulmonary parenchyma and hilar lymph nodes.

CMS-HCC V28

Not risk-adjusted for this model/period.

RAF 0

CMS-HCC V24

Mapped

HCC 112

Fibrosis of Lung and Other Ch...

RAF 0.268

ACA/HHS

Not risk-adjusted for this model/period.

RAF 0

ESRD/PACE

Mapped

HCC 112

Fibrosis of Lung and Other Ch...

RAF 0.0

RXHCC

Mapped

HCC 227

Sarcoidosis, Pulmonary Alveol...

RAF 0.0

Code Trumping

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Code Book Path

Official

D86Sarcoidosis

D86.0Sarcoidosis of lung

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for D86.0 in this effective period.

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for D86.0 in this effective period.

Related Child Codes

Official

D86.1Sarcoidosis of lymph nodes

D86.2Sarcoidosis of lung with sarcoidosis of lymph nodes

D86.3Sarcoidosis of skin

D86.8Sarcoidosis of other sites

D86.9Sarcoidosis, unspecified

Includes

Official

ICD-10-CM does not list Includes notes for D86.0 in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for D86.0 in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for D86.0 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for D86.0 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for D86.0 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance

Documentation must include radiographic staging (stage 0-IV based on chest imaging), pulmonary function test results, histological confirmation of non-caseating granulomas when available, symptom severity, and current treatment including corticosteroids or steroidsparing agents if prescribed.

Specify whether the disease is active, stable, or progressive, and document any pulmonary complications such as pulmonary hypertension or fibrosis.

MEAT Support

HCC Buddy guidance

Specify whether the disease is active, stable, or progressive, and document any pulmonary complications such as pulmonary hypertension or fibrosis.

Audit Caution

HCC Buddy guidance

Bilateral hilar lymphadenopathy alone without parenchymal lung disease is coded as D86.1, not D86.

If both lung parenchyma and lymph nodes are involved, use D86.

Sarcoidosis must be distinguished from tuberculosis and other granulomatous diseases through biopsy and culture; non-caseating granulomas are characteristic but not pathognomonic. Code associated complications such as pulmonary fibrosis (J84.10) or pulmonary hypertension (I27.20) separately.

Common Mistakes

HCC Buddy guidance

D86.1 (sarcoidosis of lymph nodes which may coexist with but is distinct from pulmonary parenchymal disease), D86.2 (sarcoidosis of lung with sarcoidosis of lymph nodes when both are present), J84.10 (pulmonary fibrosis, unspecified, which may be a sequela of sarcoidosis), D86.9 (sarcoidosis, unspecified, when the organ involvement is not documented).

Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.

Is D86.0 an HCC code?

Yes. D86.0 maps to Fibrosis of Lung and Other Chronic Lung Disorders under the V24 model but is not retained in V28.

HCC Category Mapping

V24HCC 112, Fibrosis of Lung and Other Chronic Lung Disorders

0.268

ESRDHCC 112, Fibrosis of Lung and Other Chronic Lung Disorders

0.000

RxHCCHCC 227, Sarcoidosis, Pulmonary Alveolar Disorders

0.000

RAF weights shown are the community, non-dual, aged base weights from the CMS risk adjustment model file. Actual per-patient RAF contribution depends on member segment, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains in use during the transition and for historical data.

MEAT Criteria for D86.0

For D86.0to count as a valid HCC diagnosis in a given encounter, the provider's documentation must show MEAT: Monitor, Evaluate, Assess, or Treat. A diagnosis from a prior year does not carry forward automatically, it has to be re-documented and supported each calendar year.

MMonitor: signs, symptoms, disease progression, or lab trending documented in the note
EEvaluate: test results, medication response, or physical findings reviewed by the provider
AAssess: explicit mention in the assessment or plan with acknowledgment of status
TTreat: medication, referral, procedure, therapy, or counseling tied to the diagnosis

Only one of M/E/A/T is required to support the code, but the documentation must be specific enough to show that the provider actually addressed D86.0 during that encounter, not just copy-forwarded from a problem list.

What This Code Means

D86.0 is the ICD-10-CM diagnosis code for sarcoidosis of lung. Sarcoidosis is an inflammatory disease where abnormal tissue collections form in the lungs, causing breathing problems and chest discomfort. D86.0 sits in the ICD-10-CM chapter for diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (d50-d89), within the section covering certain disorders involving the immune mechanism (d80-d89).

Under the older CMS-HCC V24 model, D86.0 maps to Fibrosis of Lung and Other Chronic Lung Disorders (HCC 112) with a community, non-dual, aged base RAF weight of 0.268. V28 is the CMS-HCC risk adjustment model that reached 100% phase-in for payment year 2026, replacing V24 which was used during the PY2024–PY2025 transition.

Specify the stage of pulmonary sarcoidosis if documented (0-IV). Because D86.0 maps to a payment HCC, the provider's documentation must satisfy MEAT criteria (Monitor, Evaluate, Assess, or Treat) for the encounter to count toward the patient's Medicare Advantage risk adjustment score. When documentation is ambiguous, coders should issue a provider query rather than assume the highest-specificity variant.

HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for D86.0 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•Specify the stage of pulmonary sarcoidosis if documented (0-IV)
•Code any associated respiratory complications separately (e.g., pulmonary fibrosis)

Clinical Significance

Sarcoidosis of lung is a chronic granulomatous disease of unknown etiology characterized by non-caseating granulomas in the pulmonary parenchyma and hilar lymph nodes. It most commonly affects young adults, with higher prevalence in African Americans and Northern Europeans, and can range from asymptomatic bilateral hilar lymphadenopathy to progressive pulmonary fibrosis with respiratory failure.

Documentation Requirements

✓Documentation must include radiographic staging (stage 0-IV based on chest imaging), pulmonary function test results, histological confirmation of non-caseating granulomas when available, symptom severity, and current treatment including corticosteroids or steroidsparing agents if prescribed.
✓Specify whether the disease is active, stable, or progressive, and document any pulmonary complications such as pulmonary hypertension or fibrosis.

Commonly Confused Codes

•D86.1 (sarcoidosis of lymph nodes which may coexist with but is distinct from pulmonary parenchymal disease), D86.2 (sarcoidosis of lung with sarcoidosis of lymph nodes when both are present), J84.10 (pulmonary fibrosis, unspecified, which may be a sequela of sarcoidosis), D86.9 (sarcoidosis, unspecified, when the organ involvement is not documented).