M01
Non-Billable

Direct infections of joint in infectious and parasitic diseases classified elsewhere

Non-Billable / Non-Specific Code

What is Direct infections of joint in infectious and parasitic diseases classified elsewhere?

ICD-10-CM M01 is the diagnosis code for Direct infections of joint in infectious and parasitic diseases classified elsewhere. This code falls under the section "Infectious arthropathies" within Chapter 13 — Diseases of the musculoskeletal system and connective tissue (M00-M99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.

⛔ Excludes1

Coding Guidelines for M01

⛔ Type 1 Excludes (Never code together)

The following conditions should never be coded at the same time as M01. They are mutually exclusive:

  • arthropathy in Lyme disease (A69.23)
  • gonococcal arthritis (A54.42)
  • meningococcal arthritis (A39.83)
  • mumps arthritis (B26.85)
  • postinfective arthropathy (M02.-)
  • postmeningococcal arthritis (A39.84)
  • reactive arthritis (M02.3)
  • rubella arthritis (B06.82)
  • sarcoidosis arthritis (D86.86)
  • typhoid fever arthritis (A01.04)
  • tuberculosis arthritis (A18.01-A18.02)

ICD-10-CM Code Hierarchy

Understanding where M01 sits in the ICD-10-CM classification helps ensure proper coding:

Current CodeM01 — Direct infections of joint in infectious and parasitic diseases classified elsewhere
Sub-Codes (1)
Sub-Codes 1 entries
M01.XDirect infection of joint in infectious and parasitic diseases classified elsewhereNon-BillableM01.X0Direct infection of unspecified joint in infectious and parasitic diseases classified elsewhereBillableM01.X1Direct infection of shoulder joint in infectious and parasitic diseases classified elsewhereNon-BillableM01.X11Direct infection of right shoulder in infectious and parasitic diseases classified elsewhereBillableM01.X12Direct infection of left shoulder in infectious and parasitic diseases classified elsewhereBillableM01.X19Direct infection of unspecified shoulder in infectious and parasitic diseases classified elsewhereBillableM01.X2Direct infection of elbow in infectious and parasitic diseases classified elsewhereNon-BillableM01.X21Direct infection of right elbow in infectious and parasitic diseases classified elsewhereBillableM01.X22Direct infection of left elbow in infectious and parasitic diseases classified elsewhereBillableM01.X29Direct infection of unspecified elbow in infectious and parasitic diseases classified elsewhereBillableM01.X3Direct infection of wrist in infectious and parasitic diseases classified elsewhereNon-BillableM01.X31Direct infection of right wrist in infectious and parasitic diseases classified elsewhereBillableM01.X32Direct infection of left wrist in infectious and parasitic diseases classified elsewhereBillableM01.X39Direct infection of unspecified wrist in infectious and parasitic diseases classified elsewhereBillableM01.X4Direct infection of hand in infectious and parasitic diseases classified elsewhereNon-BillableM01.X41Direct infection of right hand in infectious and parasitic diseases classified elsewhereBillableM01.X42Direct infection of left hand in infectious and parasitic diseases classified elsewhereBillableM01.X49Direct infection of unspecified hand in infectious and parasitic diseases classified elsewhereBillableM01.X5Direct infection of hip in infectious and parasitic diseases classified elsewhereNon-BillableM01.X51Direct infection of right hip in infectious and parasitic diseases classified elsewhereBillableM01.X52Direct infection of left hip in infectious and parasitic diseases classified elsewhereBillableM01.X59Direct infection of unspecified hip in infectious and parasitic diseases classified elsewhereBillableM01.X6Direct infection of knee in infectious and parasitic diseases classified elsewhereNon-BillableM01.X61Direct infection of right knee in infectious and parasitic diseases classified elsewhereBillableM01.X62Direct infection of left knee in infectious and parasitic diseases classified elsewhereBillableM01.X69Direct infection of unspecified knee in infectious and parasitic diseases classified elsewhereBillableM01.X7Direct infection of ankle and foot in infectious and parasitic diseases classified elsewhereNon-BillableM01.X71Direct infection of right ankle and foot in infectious and parasitic diseases classified elsewhereBillableM01.X72Direct infection of left ankle and foot in infectious and parasitic diseases classified elsewhereBillableM01.X79Direct infection of unspecified ankle and foot in infectious and parasitic diseases classified elsewhereBillableM01.X8Direct infection of vertebrae in infectious and parasitic diseases classified elsewhereBillableM01.X9Direct infection of multiple joints in infectious and parasitic diseases classified elsewhereBillable
Related Codes

Frequently Asked Questions

Is M01 a billable ICD-10-CM code?

No, M01 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does M01 mean?

M01 is the ICD-10-CM diagnosis code for "Direct infections of joint in infectious and parasitic diseases classified elsewhere". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What section is M01 in?

M01 is located in Section M00-M02 — "Infectious arthropathies" within Chapter 13 of the ICD-10-CM Tabular List.

What are the sub-codes of M01?

M01 has 1 sub-code(s) that provide more specific detail: M01.X.

When should I use M01?

Use M01 when the patients documented diagnosis matches "Direct infections of joint in infectious and parasitic diseases classified elsewhere" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.

People Also Ask

What is the ICD-10 code for Direct infections of joint in infectious and parasitic diseases classified elsewhere?

The ICD-10-CM code for Direct infections of joint in infectious and parasitic diseases classified elsewhere is M01.

Can M01 be used for primary diagnosis?

No, M01 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is M01 in?

M01 is in Chapter 13 of the ICD-10-CM Tabular List.

What conditions are excluded from M01?

Type 1 Excludes for M01 include: arthropathy in Lyme disease (A69.23); gonococcal arthritis (A54.42); meningococcal arthritis (A39.83) and more.

Is M01 valid for 2026?

Yes, M01 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousM00.9Pyogenic arthritis, unspecifiedNext →M01.XDirect infection of joint in infectious and parasitic diseases classified elsewhere
Code Details
M01
Direct infections of joint in infectious and parasitic diseases classified elsewhere
Non-Billable / Non-Specific Code
13 — Diseases of the musculoskeletal system and connective tissue (M00-M99)
M00-M02 — Infectious arthropathies
2026 ICD-10-CM