What is ICD-10 code D86.87?

D86.87 is the ICD-10-CM diagnosis code for Sarcoid myositis. Inflammation of the muscles caused by sarcoidosis, leading to muscle weakness, pain, and potential loss of function. D86.87 is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. D86.87 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. D86.87 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. D86.87 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 D86.87?

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. D86.87 is a payment HCC under V28 (Rheumatoid Arthritis and Inflammatory Connective Tissue Disease) but was not retained as a payment HCC under V24. Both models can still appear in legacy data and in payer-specific lookback periods.

What should coders know when reporting D86.87?

Document the location and severity of muscle involvement Differentiate from other myositis causes by confirming sarcoidosis etiology in documentation Because D86.87 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.

D86.87: Sarcoid myositis — ICD-10 | Rheumatoid Arthritis and Inflammatory Connective Tissue

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 lookupD86.87Effective 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)

D86.87

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

Sarcoid myositis

Inflammation of the muscles caused by sarcoidosis, leading to muscle weakness, pain, and potential loss of function.

Buddy Insight

Sarcoid myositis is a rare but clinically significant manifestation of sarcoidosis involving granulomatous inflammation of skeletal muscle.

CMS-HCC V28

Mapped

HCC 93

Rheumatoid Arthritis and Infl...

RAF 0.175

CMS-HCC V24

Not risk-adjusted for this model/period.

RAF 0

ACA/HHS

Not risk-adjusted for this model/period.

RAF 0

ESRD/PACE

Not risk-adjusted for this model/period.

RAF 0

RXHCC

Not risk-adjusted for this model/period.

RAF 0

Code Trumping

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Code Book Path

Official

D86Sarcoidosis

D86.8Sarcoidosis of other sites

D86.87Sarcoid myositis

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for D86.87 in this effective period.

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for D86.87 in this effective period.

Related Child Codes

Official

D86.81Sarcoid meningitis

D86.82Multiple cranial nerve palsies in sarcoidosis

D86.83Sarcoid iridocyclitis

D86.84Sarcoid pyelonephritis

D86.85Sarcoid myocarditis

Includes

Official

ICD-10-CM does not list Includes notes for D86.87 in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for D86.87 in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for D86.87 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for D86.87 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for D86.87 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance

Documentation must confirm sarcoidosis as the cause of the myositis, ideally with muscle biopsy showing non-caseating granulomas.

The provider should record presenting symptoms (weakness, pain, functional limitations), elevated muscle enzymes (creatine kinase), EMG/MRI findings, and treatment plan.

The relationship between the myositis and underlying sarcoidosis must be clearly stated.

MEAT Support

HCC Buddy guidance

Documentation must confirm sarcoidosis as the cause of the myositis, ideally with muscle biopsy showing non-caseating granulomas.

The provider should record presenting symptoms (weakness, pain, functional limitations), elevated muscle enzymes (creatine kinase), EMG/MRI findings, and treatment plan.

The relationship between the myositis and underlying sarcoidosis must be clearly stated.

Audit Caution

HCC Buddy guidance

Sarcoid myositis is frequently underdiagnosed because it can be asymptomatic or overshadowed by pulmonary symptoms. Do not code steroid myopathy (G72.0) as sarcoid myositis

distinguish treatment-related muscle weakness from disease-related inflammation. Ensure biopsy or imaging confirmation supports the diagnosis rather than coding based on muscle pain alone in a sarcoidosis patient.

Common Mistakes

HCC Buddy guidance

M60.9 (Myositis, unspecified) should not be used when sarcoidosis is the documented cause.

M33.20 (Polymyositis without myopathy) and M33.22 (Polymyositis with myopathy) are used for idiopathic inflammatory myopathies, not sarcoid-related muscle inflammation.

D86.89 (Sarcoidosis of other sites) is less specific and should not be used when D86.87 is available.

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 D86.87 an HCC code?

Yes. D86.87 maps to Rheumatoid Arthritis and Inflammatory Connective Tissue Disease under the CMS-HCC V28 risk adjustment model.

HCC Category Mapping

V28HCC 93, Rheumatoid Arthritis and Inflammatory Connective Tissue Disease

0.175

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 D86.87

For D86.87to 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 D86.87 during that encounter, not just copy-forwarded from a problem list.

Coder workflow notes

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What This Code Means

D86.87 is the ICD-10-CM diagnosis code for sarcoid myositis. Inflammation of the muscles caused by sarcoidosis, leading to muscle weakness, pain, and potential loss of function. D86.87 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 CMS-HCC V28 risk adjustment model, D86.87 maps to Rheumatoid Arthritis and Inflammatory Connective Tissue Disease (HCC 93) with a community, non-dual, aged base RAF weight of 0.175. D86.87 was not retained as a payment HCC under the older V24 model, so V28 introduced or recategorized it during the 2024–2026 phase-in. 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.

Document the location and severity of muscle involvement. Because D86.87 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 D86.87 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•Document the location and severity of muscle involvement
•Differentiate from other myositis causes by confirming sarcoidosis etiology in documentation

Clinical Significance

Sarcoid myositis is a rare but clinically significant manifestation of sarcoidosis involving granulomatous inflammation of skeletal muscle. It can present as acute myopathy with proximal muscle weakness, chronic progressive myopathy, or incidentally discovered nodular muscle lesions. Though uncommon, it can cause significant functional impairment and may mimic other inflammatory myopathies, requiring careful diagnostic workup.

Documentation Requirements

✓Documentation must confirm sarcoidosis as the cause of the myositis, ideally with muscle biopsy showing non-caseating granulomas.
✓The provider should record presenting symptoms (weakness, pain, functional limitations), elevated muscle enzymes (creatine kinase), EMG/MRI findings, and treatment plan.
✓The relationship between the myositis and underlying sarcoidosis must be clearly stated.

Commonly Confused Codes

•M60.9 (Myositis, unspecified) should not be used when sarcoidosis is the documented cause.
•M33.20 (Polymyositis without myopathy) and M33.22 (Polymyositis with myopathy) are used for idiopathic inflammatory myopathies, not sarcoid-related muscle inflammation.
•D86.89 (Sarcoidosis of other sites) is less specific and should not be used when D86.87 is available.