ICD-10/M05.1

M05.1 ICD 2026 Code: Rheumatoid lung disease with rheumatoid arthritis

M05.1 is the authoritative medical code for Rheumatoid lung disease with rheumatoid arthritis. This classification is used in medical billing and clinical recording to specify the clinical criteria for rheumatoid lung disease with rheumatoid arthritis (ICD-10-CM M05.1), ensuring healthcare documentation aligns with 2026 federal coding standards.

Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.

Official Registry Overview & Definition

Rheumatoid lung disease with rheumatoid arthritis is a non-billable ICD-10-CM category code M05.1. A more specific billable subcode must be selected for claims submission. Excludes1 (not coded here): rheumatic fever I00; juvenile rheumatoid arthritis M08.-; rheumatoid arthritis of spine M45.-.

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for M05.1 in the official ICD-10-CM tabular list.

Excludes1 — Not Coded Here

Conditions that can never be reported with this code; the two are mutually exclusive.

  • rheumatic fever I00
  • juvenile rheumatoid arthritis M08.-
  • rheumatoid arthritis of spine M45.-

Frequently Asked Questions (FAQ) & Clinical Guidance

Can M05.1 be billed directly?

No. M05.1 (Rheumatoid lung disease with rheumatoid arthritis) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.

What can't be coded together with M05.1?

Per Excludes1 instructions, M05.1 must not be reported with: rheumatic fever (I00); juvenile rheumatoid arthritis (M08.-); rheumatoid arthritis of spine (M45.-).

Codes in This Family (30)

Official ICD-10-CM classifications in the same code family as M05.1, with their registry titles.

  • M05.10 — Rheumatoid lung disease with rheumatoid arthritis of unspecified site
  • M05.11 — Rheumatoid lung disease with rheumatoid arthritis of shoulder
  • M05.111 — Rheumatoid lung disease with rheumatoid arthritis of right shoulder
  • M05.112 — Rheumatoid lung disease with rheumatoid arthritis of left shoulder
  • M05.119 — Rheumatoid lung disease with rheumatoid arthritis of unspecified shoulder
  • M05.12 — Rheumatoid lung disease with rheumatoid arthritis of elbow
  • M05.121 — Rheumatoid lung disease with rheumatoid arthritis of right elbow
  • M05.122 — Rheumatoid lung disease with rheumatoid arthritis of left elbow
  • M05.129 — Rheumatoid lung disease with rheumatoid arthritis of unspecified elbow
  • M05.13 — Rheumatoid lung disease with rheumatoid arthritis of wrist
  • M05.131 — Rheumatoid lung disease with rheumatoid arthritis of right wrist
  • M05.132 — Rheumatoid lung disease with rheumatoid arthritis of left wrist
  • M05.139 — Rheumatoid lung disease with rheumatoid arthritis of unspecified wrist
  • M05.14 — Rheumatoid lung disease with rheumatoid arthritis of hand
  • M05.141 — Rheumatoid lung disease with rheumatoid arthritis of right hand
  • M05.142 — Rheumatoid lung disease with rheumatoid arthritis of left hand
  • M05.149 — Rheumatoid lung disease with rheumatoid arthritis of unspecified hand
  • M05.15 — Rheumatoid lung disease with rheumatoid arthritis of hip
  • M05.151 — Rheumatoid lung disease with rheumatoid arthritis of right hip
  • M05.152 — Rheumatoid lung disease with rheumatoid arthritis of left hip
  • M05.159 — Rheumatoid lung disease with rheumatoid arthritis of unspecified hip
  • M05.16 — Rheumatoid lung disease with rheumatoid arthritis of knee
  • M05.161 — Rheumatoid lung disease with rheumatoid arthritis of right knee
  • M05.162 — Rheumatoid lung disease with rheumatoid arthritis of left knee
  • M05.169 — Rheumatoid lung disease with rheumatoid arthritis of unspecified knee
  • M05.17 — Rheumatoid lung disease with rheumatoid arthritis of ankle and foot
  • M05.171 — Rheumatoid lung disease with rheumatoid arthritis of right ankle and foot
  • M05.172 — Rheumatoid lung disease with rheumatoid arthritis of left ankle and foot
  • M05.179 — Rheumatoid lung disease with rheumatoid arthritis of unspecified ankle and foot
  • M05.19 — Rheumatoid lung disease with rheumatoid arthritis of multiple sites

Related Codes & Numerical Sequence (Crawl Map)

Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:

ICD Code M00.1 Pneumococcal arthritis and polyarthritis
ICD Code M02.1 Postdysenteric arthropathy
ICD Code M04.1 Periodic fever syndromes
ICD Code M06.1 Adult-onset Still's disease
ICD Code M08.1 Juvenile ankylosing spondylitis
ICD Code M10.1 Lead-induced gout
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