What is ICD-10 code M71.00?

M71.00 is the ICD-10-CM diagnosis code for Abscess of bursa, unspecified site. An infection or collection of pus in a bursa (fluid-filled sac near joints) at an unspecified location in the body. M71.00 is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. M71.00 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. M71.00 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. M71.00 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.

Which HCC does M71.00 map to under V28?

M71.00 has no payable CMS-HCC V28 mapping in the final FY2026 CMS file.

What RAF reference is published for M71.00?

M71.00 has no V28 reference coefficient because the final FY2026 source verifies no payable V28 mapping.

What is the V28 vs V24 difference for M71.00?

M71.00 has verified no payable V28 mapping in the final FY2026 source. Select a historical effective period before making any V24 comparison.

2026 ICD-10-CM M71.00: Abscess of bursa, unspecified site

M71.00 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · free HCC coding tools

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Code lookupM71.00

Effective periodFY2026 Apr Update (Apr 1-Sep 30)

FY 2026 Apr update / Diseases of the musculoskeletal system and connective tissue (M00-M99) / Other soft tissue disorders (M70-M79)

M71.00

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

Abscess of bursa, unspecified site

An infection or collection of pus in a bursa (fluid-filled sac near joints) at an unspecified location in the body.

Overview Risk Models Code Book Documentation Audit Notes Edition comparison

CMS-HCC V28

N/A

—

Not risk-adjusted for this model/period.

Not mapped

CMS-HCC V24

Historical

Not used for standard CY2026 Medicare Advantage payment. Select a historical period to review V24.

Not used for CY2026 payment

ACA/HHS

N/A

—

Not risk-adjusted for this model/period.

Not mapped

ESRD/PACE

N/A

—

Not risk-adjusted for this model/period.

Not mapped

RXHCC

N/A

—

Not risk-adjusted for this model/period.

Not mapped

Code Book Path

Official

M71Other bursopathies M71.0Abscess of bursa M71.00Abscess of bursa, unspecified site

Inclusion Terms

Official

No inclusion terms are included in this display for M71.00. Check the code and parent instructions in the Code Book.

Excludes 2

Official

arthropathic psoriasis (L40.5-)Inherited from M00-M99
certain conditions originating in the perinatal period (P04-P96)Inherited from M00-M99
certain infectious and parasitic diseases (A00-B99)Inherited from M00-M99
compartment syndrome (traumatic) (T79.A-)Inherited from M00-M99
complications of pregnancy, childbirth and the puerperium (O00-O9A)Inherited from M00-M99
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Inherited from M00-M99
endocrine, nutritional and metabolic diseases (E00-E88)Inherited from M00-M99
injury, poisoning and certain other consequences of external causes (S00-T88)Inherited from M00-M99
neoplasms (C00-D49)Inherited from M00-M99
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)Inherited from M00-M99

Related Codes

Official

M71.01Abscess of bursa, shoulder M71.02Abscess of bursa, elbow M71.03Abscess of bursa, wrist M71.04Abscess of bursa, hand M71.05Abscess of bursa, hip

Includes

Official

No Includes notes are included in this display for M71.00. Check the code and parent instructions in the Code Book.

Excludes 1

Official

bunion (M20.1)Inherited from M71
bursitis related to use, overuse or pressure (M70.-)Inherited from M71
enthesopathies (M76-M77)Inherited from M71

Code First

Official

No Code First sequencing instructions are included in this display for M71.00. Check the code and parent instructions in the Code Book.

Use Additional

Official

code (B95.-, B96.-) to identify causative organismInherited from M71.0

Code Also

Official

No Code Also instructions are included in this display for M71.00. Check the code and parent instructions in the Code Book.

Buddy Documentation Tip

HCC Buddy guidance

This is a non-specific code; attempt to identify the specific anatomical site (shoulder, elbow, wrist, etc.) for more precise coding

Verify whether the abscess is related to infection or trauma to support clinical documentation

Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →

Is M71.00 an HCC code?

No. M71.00 is a billable ICD-10-CM code with no mapping under the CMS-HCC V28 or V24 community payment models, and none under the ESRD, Part D RxHCC, or HHS-HCC models.

Code: M71.00
Description: Abscess of bursa, unspecified site
HCC (V28): No CMS-HCC V28 mapping
RAF reference coefficient: —
Billable: Yes
Payment year: 2026

Coder workflow notes

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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

M71.00 is the ICD-10-CM diagnosis code for abscess of bursa, unspecified site. An infection or collection of pus in a bursa (fluid-filled sac near joints) at an unspecified location in the body. M71.00 sits in the ICD-10-CM chapter for diseases of the musculoskeletal system and connective tissue (m00-m99), within the section covering other soft tissue disorders (m70-m79).

M71.00 is a billable ICD-10-CM code, but the current payload does not show a mapping under the CMS-HCC V28 or V24 community payment models, and none under the ESRD, Part D RxHCC, or HHS-HCC models. Do not assign risk adjustment value from this page when no source-backed mapping is shown; verify the applicable model and payment year.

This is a non-specific code; attempt to identify the specific anatomical site (shoulder, elbow, wrist, etc.) for more precise coding.

HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for M71.00 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•This is a non-specific code; attempt to identify the specific anatomical site (shoulder, elbow, wrist, etc.) for more precise coding
•Verify whether the abscess is related to infection or trauma to support clinical documentation