2026 ICD-10-CM Diagnosis Code D36.12Benign neoplasm of peripheral nerves and autonomic nervous system, upper limb, including shoulder

ICD-10-CM Codes›C00–D49›D10-D36›D36

ICD-10-CM D36.12
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

D36.12 is a billable ICD-10-CM diagnosis code for benign neoplasm of peripheral nerves and autonomic nervous system, upper limb, including shoulder. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 564 through 566. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Benign neoplasms.

Code Identity

ICD-10-CM Code
D36.12
Billable Status
Yes — Valid for Submission
Code Describes
Benign neoplasm of peripheral nerves and autonomic nervous system, upper limb, including shoulder
Short Description
Ben neoplm of prph nrv & autonm nrv sys, upr lmb, inc shldr
Parent Code
D36.1
Benign neoplasm of peripheral nerves and autonomic nervous system

Code Classification

ChapterC00–D49Neoplasms
SectionD10-D36Benign neoplasms, except benign neuroendocrine tumors
CategoryD36Benign neoplasm of other and unspecified sites
This CodeD36.12Benign neoplasm of peripheral nerves and autonomic nervous system, upper limb, including shoulder

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Benign neoplasm of brachial plexus
  • Benign neoplasm of peripheral nerves of shoulder
  • Benign neoplasm of peripheral nerves of upper limb
  • Benign neoplasm of soft tissue of hand
  • Benign neoplasm of soft tissues of shoulder
  • Neoplasm of peripheral nerves of shoulder
  • Neurofibroma of hand
  • Neurofibroma of upper limb
  • Neuroma of hand
  • Neuroma of upper limb
  • Postoperative neuroma of upper limb
  • Schwannoma of hand
  • Schwannoma of nerve of upper limb

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR NEO073
Benign neoplasms
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Brachial Plexus

    the large network of nerve fibers which distributes the innervation of the upper extremity. the brachial plexus extends from the neck into the axilla. in humans, the nerves of the plexus usually originate from the lower cervical and the first thoracic spinal cord segments (c5-c8 and t1), but variations are not uncommon.

  • Brachial Plexus Block

    a blocking of neural conduction in the network of nerve fibers innervating the upper extremity.

  • Brachial Plexus Neuritis

    a syndrome associated with inflammation of the brachial plexus. clinical features include severe pain in the shoulder region which may be accompanied by muscle weakness and loss of sensation in the upper extremity. this condition may be associated with virus diseases; immunization; surgery; heroin use (see heroin dependence); and other conditions. the term brachial neuralgia generally refers to pain associated with brachial plexus injury. (from adams et al., principles of neurology, 6th ed, pp1355-6)

  • Brachial Plexus Neuropathies

    diseases of the cervical (and first thoracic) roots, nerve trunks, cords, and peripheral nerve components of the brachial plexus. clinical manifestations include regional pain, paresthesia; muscle weakness, and decreased sensation (hypesthesia) in the upper extremity. these disorders may be associated with trauma (including birth injuries); thoracic outlet syndrome; neoplasms; neuritis; radiotherapy; and other conditions. (from adams et al., principles of neurology, 6th ed, pp1351-2)

Table of NeoplasmsClinical

Anatomical sites in the Table of Neoplasms that reference this code family.

SiteMalig.
Primary		Malig.
Secondary		Ca
in situ		BenignUncertainUnspec.
brachial plexusC47.1C79.89–D36.12D48.2D49.2
nerve (ganglion) › brachialC47.1C79.89–D36.12D48.2D49.2
nerve (ganglion) › medianC47.1C79.89–D36.12D48.2D49.2
nerve (ganglion) › peripheral NEC › antecubital fossa or spaceC47.1C79.89–D36.12D48.2D49.2
nerve (ganglion) › peripheral NEC › armC47.1C79.89–D36.12D48.2D49.2
nerve (ganglion) › peripheral NEC › axillaC47.3C79.89–D36.12D48.2D49.2
nerve (ganglion) › peripheral NEC › elbowC47.1C79.89–D36.12D48.2D49.2
nerve (ganglion) › peripheral NEC › extremity › upperC47.1C79.89–D36.12D48.2D49.2
nerve (ganglion) › peripheral NEC › fingerC47.1C79.89–D36.12D48.2D49.2
nerve (ganglion) › peripheral NEC › forearmC47.1C79.89–D36.12D48.2D49.2
nerve (ganglion) › peripheral NEC › handC47.1C79.89–D36.12D48.2D49.2
nerve (ganglion) › peripheral NEC › limb NEC › upperC47.1C79.89–D36.12D48.2D49.2
nerve (ganglion) › peripheral NEC › shoulderC47.1C79.89–D36.12D48.2D49.2
nerve (ganglion) › peripheral NEC › thumbC47.1C79.89–D36.12D48.2D49.2
nerve (ganglion) › peripheral NEC › wristC47.1C79.89–D36.12D48.2D49.2
nerve (ganglion) › radialC47.1C79.89–D36.12D48.2D49.2
nerve (ganglion) › ulnarC47.1C79.89–D36.12D48.2D49.2
plexusC47.1C79.89–D36.12D48.2D49.2
plexus › brachialC47.1C79.89–D36.12D48.2D49.2

Patient EducationClinical

Autonomic Nervous System Disorders

Your autonomic nervous system is the part of your nervous system that controls involuntary actions, such as the beating of your heart and the widening or narrowing of your blood vessels. When something goes wrong in this system, it can cause serious problems, including:

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert D36.12 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
215.9 Ben neo soft tissue NOS
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About D36.12Overview

Is D36.12 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report benign neoplasm of peripheral nerves and autonomic nervous system, upper limb, including shoulder on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does D36.12 group to?

When benign neoplasm of peripheral nerves and autonomic nervous system, upper limb, including shoulder is the principal diagnosis on an inpatient stay, it groups to MS-DRG 564, 565, 566, with relative weights from 0.7493 to 1.5436 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of D36.12?

Under the General Equivalence Mappings, benign neoplasm of peripheral nerves and autonomic nervous system, upper limb, including shoulder converts to ICD-9-CM 215.9 (ben neo soft tissue NOS). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.