Skip to main content

M99.85 ICD-10-CM Code: Other biomechanical lesions of pelvic region

Compare with another codeCheck this code on a claim

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Billable · FY2027A valid, specific ICD-10-CM code, reportable for dates of service in FY2027.

What you need to know

Source: CMS/NCHS Official ICD-10-CM tabular notes, quoted. From the CMS/NCHS tabular list for the release in force. A note the category or block publishes applies to this code too; the Instructions section marks which is which.

The tabular list publishes no instructional note for this code itself.

CompareCheck ClaimView Related Codes

Inpatient Payment Groups (MS-DRG)

Potential MS-DRG participation — not a DRG assignment.

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v44, Appendix B.

  • MS-DRG 564 — OTHER MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE DIAGNOSES WITH MCC (MDC 08)
  • MS-DRG 565 — OTHER MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE DIAGNOSES WITH CC (MDC 08)
  • MS-DRG 566 — OTHER MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE DIAGNOSES WITHOUT CC/MCC (MDC 08)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Coder workflow for M99.85

MedCoder structured workflow — derived from this code’s own official record

Before you code M99.85

  1. “Other” (NEC) means the condition is specified in the record but no dedicated code captures it. Confirm the documented form is not one a sibling code names before settling on M99.85; if the record states no specifics at all, the unspecified sibling applies instead. “Other” codes are for documented conditions the classification gives no specific code; “unspecified” codes are for records lacking the detail (Guidelines I.A.9.a, I.A.9.b).

    See the relationships section · Guide: Other vs unspecified (NEC vs NOS) →

Documentation check

The provider’s diagnostic statement
Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).
Any detail beyond this code’s title
What the record states that a more specific sibling code would capture — or its absence, which itself supports the unspecified code.

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Coding context

Guidelines, coding notes, decision aids, relationships (with MS-DRG and CCSR classification), hierarchy, HCC, coverage and the context map: what a coder reaches for after the core. Each section names whether it is official source data, a MedCoder-derived relationship or MedCoder editorial.

Code Overview

Other biomechanical lesions of pelvic region is a billable ICD-10-CM diagnosis code (M99.85).

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

Verify Before Coding

  • No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder-derived relationships — computed from published CMS and AHRQ datasets

Other codes that name M99.85 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 1 Excludes1 note: M43.5 — Other recurrent vertebral dislocation (via M99.-).

These codes’ tabular lists mark this diagnosis as mutually exclusive — not reported together unless the conditions are documented as unrelated.

MS-DRG Grouper Relationships (FY2027)

Potential MS-DRG participation — not a DRG assignment.

FY2027 MS-DRG: not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity for that release.

Named in the grouper logic of 3 MS-DRGs: DRG 564 (MDC 08), DRG 565 (MDC 08), DRG 566 (MDC 08).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):MUS012 — Biomechanical lesions (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Biomechanical lesions).

M99.70 — Connective tissue and disc stenosis of intervertebral foramina of head region, M99.71 — Connective tissue and disc stenosis of intervertebral foramina of cervical region, M99.72 — Connective tissue and disc stenosis of intervertebral foramina of thoracic region, M99.73 — Connective tissue and disc stenosis of intervertebral foramina of lumbar region, M99.74 — Connective tissue and disc stenosis of intervertebral foramina of sacral region, M99.75 — Connective tissue and disc stenosis of intervertebral foramina of pelvic region, M99.76 — Connective tissue and disc stenosis of intervertebral foramina of lower extremity, M99.77 — Connective tissue and disc stenosis of intervertebral foramina of upper extremity, M99.78 — Connective tissue and disc stenosis of intervertebral foramina of rib cage, M99.79 — Connective tissue and disc stenosis of intervertebral foramina of abdomen and other regions, M99.80 — Other biomechanical lesions of head region, M99.81 — Other biomechanical lesions of cervical region, M99.82 — Other biomechanical lesions of thoracic region, M99.83 — Other biomechanical lesions of lumbar region, M99.84 — Other biomechanical lesions of sacral region, M99.86 — Other biomechanical lesions of lower extremity, M99.87 — Other biomechanical lesions of upper extremity, M99.88 — Other biomechanical lesions of rib cage, M99.89 — Other biomechanical lesions of abdomen and other regions, M99.9 — Biomechanical lesion, unspecified, +70 more

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main term “Lesion”; these codes share that main term but sit in a different category of the Tabular List.

K62.9 — Disease of anus and rectum, unspecified (anorectal), K63.9 — Disease of intestine, unspecified (colon), K76.9 — Liver disease, unspecified (liver), L08.0 — Pyoderma (skin, suppurative), L81.9 — Disorder of pigmentation, unspecified (pigment, pigmented), L94.1 — Linear scleroderma (en coup de sabre), L98.9 — Disorder of the skin and subcutaneous tissue, unspecified (skin), M53.3 — Sacrococcygeal disorders, not elsewhere classified (sacroiliac), M75.8 — Other shoulder lesions (shoulder, specified NEC), M75.9 — Shoulder lesion, unspecified (shoulder), N05.0 — Unspecified nephritic syndrome with minor glomerular abnormality (glomerular, minimal change), N05.1 — Unspecified nephritic syndrome with focal and segmental glomerular lesions (glomerular, focal and segmental), N32.9 — Bladder disorder, unspecified (bladder), N85.9 — Noninflammatory disorder of uterus, unspecified (uterus), N89.8 — Other specified noninflammatory disorders of vagina (vagina), N90.89 — Other specified noninflammatory disorders of vulva and perineum (vulva), O69.5 — Labor and delivery complicated by vascular lesion of cord (vascular, umbilical cord, complicating delivery), Q04.9 — Congenital malformation of brain, unspecified (brain, congenital), Q06.9 — Congenital malformation of spinal cord, unspecified (spinal cord, congenital), Q07.9 — Congenital malformation of nervous system, unspecified (nervous system, congenital), +68 more

Contextual Map

Every relationship of M99.85 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Run M99.85 with this related code in Claim Check

Hierarchy

Referenced by Excludes1 notes

Clinical classification (CCSR)

MS-DRG Grouper

MDC crossing

  • MDC 08 — Diseases and Disorders of the Musculoskeletal System and Connective Tissue[MDC crossing]: “Diseases and Disorders of the Musculoskeletal System and Connective Tissue — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs. 18,439 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2027

Index entries

  • Lesion (s) (nontraumatic), biomechanical, specified type NEC, hip[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027
  • Lesion (s) (nontraumatic), biomechanical, specified type NEC, pelvic region[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027
  • Lesion (s) (nontraumatic), biomechanical, specified type NEC, pubic[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027

Nearest codes (40)

Change history

  • FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Reference

Index terms and tables, published questions and FAQ, every source behind this page with its release and checksum, the date-of-service check and the complete change history.

Indexed Clinical Terms (3)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data
CMS/CDC ICD-10-CM FY2027 tabular list, index and tables, effective October 1, 2026 Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v44.0 (October 2026) Release, file and checksum · Publisher’s page
Inpatient payment groups Official source data
CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v44 Release, file and checksum · Publisher’s page
Change history and date-of-service validity Official source data
CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page
Comparisons, relationships and the contextual map MedCoder-derived relationship
Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears
Summary and FAQ answers MedCoder editorial explanation
Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 28, 2026 · All releases and sources

Labels on this page: Official source data · MedCoder-derived relationship · MedCoder editorial explanation. How to read the labels · All data sources and release dates · CMS coding rules

Cite this page

Reference this page in a research guide, syllabus or article. The release is included because code content changes each year.

MedCoder.ai. "M99.85 — Other biomechanical lesions of pelvic region." ICD-10-CM FY2027. https://medcoder.ai/icd10/code/m99.85-other-biomechanical-lesions-of-pelvic-region

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Other biomechanical lesions of pelvic region

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027, and none are recorded for this code. Note changes are tracked from FY2027 only.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to M99.85 in its code family, with their registry titles.

View all codes in the M99 family