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ICD-10-CM 2027 diagnosis code

M79.5Residual foreign body in soft tissue

✓ Billable / specific

M79.5 is a valid, billable ICD-10-CM code for residual foreign body in soft tissue. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About M79.5

M79.5 is the ICD-10-CM diagnosis code for residual foreign body in soft tissue. It belongs to category M79 (other and unspecified soft tissue disorders, not elsewhere classified), block M70-M79 (other soft tissue disorders) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within M79 (other and unspecified soft tissue disorders, not elsewhere classified), M79.5 is specifically for residual foreign body in soft tissue. Related codes cover rheumatism, unspecified (M79.0), myalgia (M79.1), neuralgia and neuritis, unspecified (M79.2), panniculitis, unspecified (M79.3), hypertrophy of (infrapatellar) fat pad (M79.4), pain in limb, hand, foot, fingers and toes (M79.6), Fibromyalgia (M79.7), other specified soft tissue disorders (M79.8) and 2 more.

Don't report M79.5 together with the conditions in its Excludes1 note: foreign body granuloma of skin and subcutaneous tissue (L92.3) and foreign body granuloma of soft tissue (M60.2-).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 564 (Other Musculoskeletal System and Connective Tissue Diagnoses with MCC, relative weight 1.4908), DRG 565 (Other Musculoskeletal System and Connective Tissue Diagnoses with CC, relative weight 0.9783) and DRG 566 (Other Musculoskeletal System and Connective Tissue Diagnoses without CC/MCC, relative weight 0.7378), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 729.6 (residual foreign body in soft tissue).

Coding notes

Excludes1Not coded here — never report together with this code
  • foreign body granuloma of skin and subcutaneous tissue (L92.3)
  • foreign body granuloma of soft tissue (M60.2-)

Notes that apply from higher levels

Instructions written at a parent level also apply to M79.5.

› From M79 Other and unspecified soft tissue disorders, not elsewhere classified
Excludes1
  • psychogenic rheumatism (F45.8)
  • soft tissue pain, psychogenic (F45.41)

Broader instructions also apply from Chapter 13: Diseases of the musculoskeletal system and connective tissue.

Alphabetic index entries

3 entries

Terms in the official ICD-10-CM index that lead to M79.5.

Codes whose notes reference M79.5

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

ICD-9-CM equivalent

Converter →
  • 729.6Residual foreign body in soft tissueexact

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about M79.5

Is M79.5 billable?

Yes. M79.5 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can M79.5 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict M79.5 as a principal diagnosis.

Is M79.5 a CC or MCC?

No. M79.5 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does M79.5 group to?

M79.5 is used in the MS-DRG v44.0 logic for MS-DRG 564 (Other Musculoskeletal System and Connective Tissue Diagnoses with MCC), MS-DRG 565 (Other Musculoskeletal System and Connective Tissue Diagnoses with CC) and MS-DRG 566 (Other Musculoskeletal System and Connective Tissue Diagnoses without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for M79.5?

The CMS General Equivalence Mappings map M79.5 to ICD-9-CM 729.6.